Your videos are an excellent resource for those of us who strive to understand not only the what but also the why. I had actually purchased an LSI 9201-8i HBA from your eBay store for my first TrueNAS build, based on recommendations in the TrueNAS forum, before discovering your TH-cam channel. Your videos have only reinforced my HBA purchase decision. Thanks for the wealth of technical information in your videos and for presenting it in such a clear and concise manner.
Your whole channel of helping amateurs work with servers on a budget is awesome. This video is no exception. I have noticed you have become less awkward in the style of your presentation since you first started.
Just got my 2 sas controllers from your eBay store the other day. I can only say, I'm glad I found you. They were like new and worked like a charm. And also thank you for the offer to help with any issues even before I had the controllers in my hands, it meant a lot for me. I also started to follow you here on TH-cam and enjoying your videos already. Have a great day.
I watched it all the way through and I think it works as a slide deck. It may not be for everyone, but it isn't the kind of information that everyone will want to know that much about. Thank you for your effort. Many people will be able to watch this where they would not be able to wade through the same information on their own.
The format worked fine for the topic and definitely helped me to better understand the actual issue with the size limitations on older SAS RAID/HBA cards. Thanks for the great videos and great eBay support!
This is solid deep tech, I was able to follow it well with the slide deck. Slightly OT- to continue with this presentation I would love to see how you configure an array using an HBA on the software side in unraid or freenas, not sure how the HBA's in IT mode shows up on them and how they handle the 48 bit or 64 bit addresses. I am teaching myself all I can to maybe screw together something like the 45 drives storage workstation, I know they are using a VM instance on unraid, but not sure how they are doing it. (Yes im a noob, I only know enough to know what I don't know!!)
When you cover a subject that is hard to present any other way, just do a slide deck. No worries. The info was there in a very easy way to understand. Your other videos really show your style as you cover normal hardware or software topics. Thanks for putting out great videos and keep up the good service at your ebay store. I need to get another controller soon as I expand and I only wanna buy from you.
Hello, I value your effort for explaining this concept. For my level of knowledge i found it generating more questions than answers. AS mentioned with a dell r710 and my limited knowledge I will need to investigate the bios the firmware and the disks if they all fit withing your parameters. Again thank you for the teachings , now i know a little more. For those individuals who understand this but know it you offered a clear frame work to build upon and a path to follow
I appreciate the careful slide presentation of fact data. The other thing I'd like to see is an inventory of commonly encountered recycled server hardware discussing the limits of each, and their capacity to be upgraded with new firmware and such. The theoretical knowledge is very helpful, and if course where the "rubber meets the road" is knowing what we should be buying on eBay or from our local enterprise gear surplus house. It's helpful that you offer IT-flashed HBAs for the times when we find good deals on hardware that has unsuitable HBA hardware, but it always helps to know what to look for. Thanks for all the great videos!!!!
Take a look around my channel, I think you'll find some videos like you suggest. For example, one of the more popular ones is the HBA comparison video here: th-cam.com/video/PeFJtjVvGyc/w-d-xo.html Thanks for watching!
I appreciate the time it takes to make these. I enjoy the education of servers especially the little things that just don't always make sense. Not much I'd change to be honest, maybe show how you update the servers in a video? I've got one stuck on 2TB limit and the rest not so it seems I'd need a solution if I wanted to have it be able to handle more per drive.
Thanks for the feedback. I do have several videos series on updating servers and building them up with TrueNAS or Proxmox: th-cam.com/play/PL28eVGz5vFQ9hUBeeg5bxj-s0IeitoGIb.html th-cam.com/play/PL28eVGz5vFQ_5TnTl0lqLHs213bXBWSA7.html Maybe those will be of interest?
@@ArtofServer yeah I’ll check them out. I watch a few of yours. Another request is when building out a few cabinets of these and connecting them with the leaf-spine architecture what kind of budget friendly routers and switches do you recommend? I’ve seen things like running pfsense and unifi but didn’t know if these had limitations or that proxmox would be better. I’m more a computational scientist who loves the compute hardware and totally nerd out on infiniband, GPUs, DPUs, TPUs, etc. but those are on someone else’s budget lol and I can’t possibly spend that kind of money. I do have more east west traffic with some north south maybe a 80/20 split. That is why I’m leaning towards the leaf-spine arch.
Superb video👍. Thank you, Art of Server. 17:00 Feedback: For this video and its subject matter, your slide deck format was effective and appropriate for educating, informing . . . and entertaining. While your spidey-sense is good in that slides are not great in most situations, here, your voicing and intonations are very good. So you come across as crisp and understandable . . . and even engaging, particularly should viewers elect to watch this content at 1x, 2x, 1.5x or 0.75x alternate video speeds of their choosing. And I will be checking out your Ebay store. I forgot that IT mode = "Initiator-Target"
Very informative video. I'll have to watch it a few times to let the information sink in however. Thank you for posting, I'll keep subscribed to your channel.
Concur with the other commenters... I suppose you could have created a graphic to show the different sized addresses, but I don't know that it would have been worth the effort; this is sort-of abstract stuff. Not sure I would change anything... might be worth commenting WHEN the various changes took place, that is "The SAS-1 to SAS-2 transition happened in the 2xxx - 2xxy timeframe, so if you're looking at hardware from before that, it'll probably only be SAS-1" or something like that. Overall I thought the presentation was effective. Thank you!
Excellent video! I knew 90-ish% of what you told, but your presentation did indeed teach me a few things (or rather, put them in the right 'order' if you will). Keep it up! Ehrmmm.. And could I request a video about SAS expanders/extenders?
@Shoikan thank you! i'm glad you found this video useful. I'm happy to take requests, just know I might not get to it soon as i have a huge backlog of other video requests/ideas/concepts. Is there something specific you'd like me to discuss about SAS expanders? I already have a few videos on the IBM SAS2 expanders here: Explanation and demo of 24xHDD setup: th-cam.com/video/qccpopxc_Uo/w-d-xo.html Performance of SAS2 expander: th-cam.com/video/BvL70tEW3VU/w-d-xo.html How to update firmware on IBM SAS2 expander: th-cam.com/video/Lw4TTI_HYqM/w-d-xo.html Thank you for watching! :-)
@@ArtofServer Excellent! I didn't find your expander videos despite looking. I guess I need better glasses ;) I was wondering, since the SAS expander card does not actually use any PCIe lanes (according to my understanding, probably only for the flashing of firmware), would the following work: I have a motherboard on which the m2 NVME slot shares the PCIe lanes with the second PCIe 16x slot. If the m2 is populated, the 2nd PCIe 16x slot does not function (but gets power). Would an expander work in that slot, given that it does get power? Or does it actually need those PCIe lanes?
@@Shoikan That's a good question. I don't know how the system detects which device to give the PCIe lanes to, the M.2 or the PCIe slot? Does it try to detect a current draw and see which slot is drawing power or not? If the detection mechanism depends on detecting power draw, this scheme might not work. But if is by other means, perhaps it can work. So, I don't have a definite answer for you, but it sure does sound like a cool way to make use of a PCIe slot that otherwise is wasted with a M.2 installed. I guess you'll have to experiment and find out! Please do let us know though.. I would be curious. To be specific, you are correct that the IBM SAS2 expander only uses the PCIe slot for power, it does not use any of the PCIe lanes. The firmware flashing is done over the SAS connection, not the PCIe lanes. So all you need is power to run the SAS expander.
@@ArtofServer I am 99% sure that the m2 slot gets precedence: I found out the hardware that they shared the lanes by inserting an M1015 in the second slot as well as an m2 drive, and wondering why the drives behind the M1015 didn't show up. I'll try to get a hold on an expander then, this does sound very hopeful indeed. I will keep you posted!
@@ArtofServer I've got the expander and.... it works like a charm! So for clarity: the motherboard is an Asrock X370 Pro4 with a lowly Ryzen 3 2200G, plus 32GB memory. I've got an NVMe drive in the m2 slot, an LSI 9201-16i in PCIe2 and the IBM SAS2 expander in PCIe4, and an Intel NIC in PCIe6. Having the NVMe drive in the m2 slot 'disconnects' the PCIe lanes from PCIe4, but it will still receive power. And voila.. Drives visible and working!
This kind of information is critical for a lot of us. I appreciate short and to the point when appropriate. Otherwise including a kitty cat is nice but only as a closer. Too damn distracting otherwise.
Great video and presentation! I'll pay your store a visit- I need to find a pair of mini SAS SFF 8087 host to 8484 target back plane for Franin' box. But first I have to shut this puppy down and stick a cachecade 2.0 raid key on the LSI 9260-8i I got to make my SSD's happy :) See you soon, thanks again for sharing!!!
Here I am going through and I came through the end slide and I have to admit you have to slam on the brakes here. "I am not here to entertain you" That is a bit incorrect, what is considered entertainment is different from person to person, and I keep going through your back catalogue because you cover a lot of things. However, your "mythbusting" on ZFS was great and you should share a bit more related to such findings. An example of "entertainment / education" 1: Test the SAS controller limits vs expanders, keep RAID 0'ing SSDs in ZFS and see how many you could get before you smacked into a link limit, then add another 4 lanes and see if it clears up. 2: Hardware RAID with cache vs ZFS, which one is faster at writing asynched loads, this is something you can do in the lab and provide answers as the current Google results is polluted and doesn't contain any usable information. That is my 2 entertainment suggestions that is also useful information to know.
I'm glad you're someone who finds my tech mumbo jumbo interesting! :-) I appreciate the ideas for future videos and I'm putting those in my list (very long list) for future ideas. Thank you for your contribution and watching my channel! :-)
the presentation was pretty good I'm not sure what more you could do to make it better. However, I think you should know your audience, people looking to understand the low-down workings of a protocol are not here for entertainment, you have their attention already, so the quality of the information is your biggest draw and will always be.
You didn't cover SAS/SATA and for that matter FC/SATA interposer boards. These are all invariably only capable of of doing READ(10)/WRITE(10), which I suspect is down to the crappy 32bit CPU's they have in them. Random further note the LSI 1068 cards in IT mode report a 2TB drive size even if you have a much larger SAS drives installed, but as far as Linux is concerned they just work.
@@ArtofServerOh the drives are file it's just at least on the firmware I was running on they where reported as only being 2TB in size as they flew past at boot time (rack full of J4400's with dual ported drives is pushing 500 "drives" visible to the OS). Linux reported their sizes correctly because in IT mode would appear to gather the information directly from the drive and ignores the card. Back in the day I did a week long test with f3write/f3read to convince myself that there was going to be no issues with data corruption.
Dang, I wish I'd seen this before. I got a PS4000e (SATA) and am 75% of the way through populating it with 2TB drives, and now you're messing with my head ! lol ! Mind you, I think 32TB will be enough for me for now; but my interest is piqued and I will need to get into the controllers somehow to find out what the hardware is doing driving the HDD's. I'm also wanting to make this available on the network as a storage pool for ZFS (PVE?) servers - do you have any experience of that ? I think I must have watched most of your other videos at least once, so I don't know how this one slipped through the net, but I thank you so much for the knowledge you've imparted, and I am still, learning from. During the recent lockdown in the UK your videos were an inspiration no less. I guess the best way I can thank you is to buy some 'stuff' from your store ha ha !!
Glad this was helpful! How do you want to share the storage over the network? I appreciate the show of support, but I know shipping to Europe is not cheap so I'm happy with just the thought! :-) Thanks for watching!
@@ArtofServer Hi, I guess I'll have to use some kind of iSCSI devices and maybe an additional switch, but reading the manual and some hardware req;s from Dell suggests my Netgear GS724 should cope. I've seen some Cisco 48 port units on eBay for between £50-£100. I've also seen that Dell/Equalogic have a version of their SAN software for VMWare but I really wanted to use Proxmox and ZFS on my other servers. However I might have to compromise on that one as I'm hoping to get hold of some firmware updates from a well-disposed ex-employee (!). Anyhow, I'm still trying to make sense of the rest of the kit bought over the lockdown (an R410; 2 x R510; 2 x 610, 2 x 710; and an R815) ! So I'm more than likely to be hanging out in your store fairly soon ! I can cut down on shipping costs if I can put together a few items in one shipment, too.
@@rufusmurphy9990 That's quite the lab you're building up there! LOL If you're just starting out with this stuff, I might suggest checking out FreeNAS for managing and sharing your storage.
@@ArtofServer ok thanks ! What with all the other stuff I'm finding out I'd kind of overlooked FreeNas. I think I've seen mention of it running virtualized somewhere 🤔
everything stated in this video is still true. the 2tb limit problem does not apply if you're using SAS-2 or newer hardware, and it only applies to SATA drives.
@@ArtofServer I just tested on my LSI SAS 9305-16i and all my 16TB drives are showing up as 16TB over SATA, or is that wrong? The backplane is SAS3 connected via a Mini-SAS HD, but my drives are SATA. Is that what you mean?
Sorry im new to this i have bought Dell Poweredge R720 with H710 mini controller and before i realized that new 12tb sas dont work on it i already buy 8 of them, so my question is there any chance to unblock this hard drives and make it work ?
I assume your H710 mini is with the stock Dell firmware? In that case, I'm not sure... might be a firmware problem. The hardware is fully capable of > 2TB HDDs, as I've demonstrated in many of my videos when using the LSI IT mode firmware. If your plan is to keep the Dell RAID firmware, I would start by making sure it is fully up to date and see if that helps your problem.
My god im hoping someone can answer this in a relatively short time frame. I have a PERC H700 card. Would updating this do anything to break the limit or am i screwed?
The PERC H700 is a LSI SAS2108 based SAS-2 6Gbps RAID controller. With the latest firmware update, it should support larger than 2TB. Typically, SAS-2 and newer hardware will do fine as long as you're not running really old firmware.
@@ArtofServer Brand new to the server space. Im setting things up in the firmware and when im trying to make a new virtual disk with a 500 gigabyte drive for my boot and a 4tb HDD, my virtual disc size limits itself to 930 gigabytes and im not sure how to solve that and make sure im getting the full 4 TB out of it.
![Forbidden Arts of ZFS | committing the greatest sin & getting away with it [Hardware RAID with ZFS]](http://i.ytimg.com/vi/S_YN1vluLws/mqdefault.jpg)
Ah, how refreshing to have answer provided in less than a minute into video, and then a scrupulous explanation with lots of neat details
Glad this was helpful to you.
Your videos are an excellent resource for those of us who strive to understand not only the what but also the why. I had actually purchased an LSI 9201-8i HBA from your eBay store for my first TrueNAS build, based on recommendations in the TrueNAS forum, before discovering your TH-cam channel. Your videos have only reinforced my HBA purchase decision. Thanks for the wealth of technical information in your videos and for presenting it in such a clear and concise manner.
I'm glad to hear you've found my videos helpful! :-) And I really appreciate your support by shopping at my store! Thank you!!!
Feedback? Nearly 5 years after this video went out, it reached me and met my needs... Thank you.
Thanks! Glad it helped!
Your whole channel of helping amateurs work with servers on a budget is awesome. This video is no exception. I have noticed you have become less awkward in the style of your presentation since you first started.
Thanks for the kind words. I will continue to improve on my content and presentation! :-)
You explain it very well and is easy to understand and not annoying to listen too.
Thanks for your compliments!
It was a very good refresher, since I have not thought about the details in several years.
I especially appreciated the reference links.
Thank you.
Glad it was helpful!
Just got my 2 sas controllers from your eBay store the other day. I can only say, I'm glad I found you. They were like new and worked like a charm. And also thank you for the offer to help with any issues even before I had the controllers in my hands, it meant a lot for me. I also started to follow you here on TH-cam and enjoying your videos already. Have a great day.
Thank you for supporting me by purchasing from my store! I'm glad everything worked out! :-)
I watched it all the way through and I think it works as a slide deck. It may not be for everyone, but it isn't the kind of information that everyone will want to know that much about. Thank you for your effort. Many people will be able to watch this where they would not be able to wade through the same information on their own.
@Chris Moore Thank you for watching it all the way through and your feedback! :-)
and answering your last question: The form didn't affect me at all, on the contrary, the content is well presented and easy to understand.
Thank you for watching and your feedback 😌
The format worked fine for the topic and definitely helped me to better understand the actual issue with the size limitations on older SAS RAID/HBA cards. Thanks for the great videos and great eBay support!
Thanks for watching all the way to the end. I appreciate the feedback. :-)
you should include this video in your store description, this will save you a lot of time!!
Yeah, I get this question a lot so I made this video. But I can't include external links on eBay.
Thank you for your effort explaining in so detailed way the limitations of 32 bit LBA! Your work is awesome! Much appreciated!
Glad it was helpful!
This was an awesome overview of the 2TB limit and when/why/how it applies. I thought your delivery was excellent.
Thank you 😊
This is solid deep tech, I was able to follow it well with the slide deck. Slightly OT- to continue with this presentation I would love to see how you configure an array using an HBA on the software side in unraid or freenas, not sure how the HBA's in IT mode shows up on them and how they handle the 48 bit or 64 bit addresses. I am teaching myself all I can to maybe screw together something like the 45 drives storage workstation, I know they are using a VM instance on unraid, but not sure how they are doing it. (Yes im a noob, I only know enough to know what I don't know!!)
Thanks for watching! And thanks for the suggestion...
When you cover a subject that is hard to present any other way, just do a slide deck. No worries. The info was there in a very easy way to understand. Your other videos really show your style as you cover normal hardware or software topics.
Thanks for putting out great videos and keep up the good service at your ebay store. I need to get another controller soon as I expand and I only wanna buy from you.
Thank you for your kind words.
Hello, I value your effort for explaining this concept. For my level of knowledge i found it generating more questions than answers. AS mentioned with a dell r710 and my limited knowledge I will need to investigate the bios the firmware and the disks if they all fit withing your parameters. Again thank you for the teachings , now i know a little more. For those individuals who understand this but know it you offered a clear frame work to build upon and a path to follow
Thanks for your kind words. Hope you will find my channel helpful for your project!
Super clear, you are the best resource for this whole area of tech on all of TH-cam. Big thanks!
Glad you think so! Thank you for watching!
The format worked well for this. I doubt there would have been a better way. Cheers thanks for sharing this information.
Thank you!
I appreciate the careful slide presentation of fact data.
The other thing I'd like to see is an inventory of commonly encountered recycled server hardware discussing the limits of each, and their capacity to be upgraded with new firmware and such.
The theoretical knowledge is very helpful, and if course where the "rubber meets the road" is knowing what we should be buying on eBay or from our local enterprise gear surplus house.
It's helpful that you offer IT-flashed HBAs for the times when we find good deals on hardware that has unsuitable HBA hardware, but it always helps to know what to look for.
Thanks for all the great videos!!!!
Take a look around my channel, I think you'll find some videos like you suggest. For example, one of the more popular ones is the HBA comparison video here:
th-cam.com/video/PeFJtjVvGyc/w-d-xo.html
Thanks for watching!
I appreciate the time it takes to make these. I enjoy the education of servers especially the little things that just don't always make sense. Not much I'd change to be honest, maybe show how you update the servers in a video? I've got one stuck on 2TB limit and the rest not so it seems I'd need a solution if I wanted to have it be able to handle more per drive.
Thanks for the feedback.
I do have several videos series on updating servers and building them up with TrueNAS or Proxmox:
th-cam.com/play/PL28eVGz5vFQ9hUBeeg5bxj-s0IeitoGIb.html
th-cam.com/play/PL28eVGz5vFQ_5TnTl0lqLHs213bXBWSA7.html
Maybe those will be of interest?
@@ArtofServer yeah I’ll check them out. I watch a few of yours. Another request is when building out a few cabinets of these and connecting them with the leaf-spine architecture what kind of budget friendly routers and switches do you recommend?
I’ve seen things like running pfsense and unifi but didn’t know if these had limitations or that proxmox would be better.
I’m more a computational scientist who loves the compute hardware and totally nerd out on infiniband, GPUs, DPUs, TPUs, etc. but those are on someone else’s budget lol and I can’t possibly spend that kind of money.
I do have more east west traffic with some north south maybe a 80/20 split. That is why I’m leaning towards the leaf-spine arch.
This video was very informative and I enjoyed the format, although including some more graphics would be a nice addition. Thank you!
@NJMLCM Thank you for your feedback!
Superb video👍. Thank you, Art of Server.
17:00 Feedback: For this video and its subject matter, your slide deck format was effective and appropriate for educating, informing . . . and entertaining.
While your spidey-sense is good in that slides are not great in most situations, here, your voicing and intonations are very good. So you come across as crisp and understandable . . . and even engaging, particularly should viewers elect to watch this content at 1x, 2x, 1.5x or 0.75x alternate video speeds of their choosing.
And I will be checking out your Ebay store.
I forgot that IT mode = "Initiator-Target"
Thanks for your feedback. I'm glad to know you found this video useful. :-)
Thanks for your time and effort.
My pleasure!
Very informative video. I'll have to watch it a few times to let the information sink in however. Thank you for posting, I'll keep subscribed to your channel.
Glad it was helpful. Thank you for watching!
Concur with the other commenters... I suppose you could have created a graphic to show the different sized addresses, but I don't know that it would have been worth the effort; this is sort-of abstract stuff. Not sure I would change anything... might be worth commenting WHEN the various changes took place, that is "The SAS-1 to SAS-2 transition happened in the 2xxx - 2xxy timeframe, so if you're looking at hardware from before that, it'll probably only be SAS-1" or something like that. Overall I thought the presentation was effective. Thank you!
Thanks for the feedback! :-)
Like all your videos, informative and in depth in an easy to understand way. Totally underrated on youtube, hopefully that changes soon.
Very nicely explained
Thank you so much 🙂
Excellent video! I knew 90-ish% of what you told, but your presentation did indeed teach me a few things (or rather, put them in the right 'order' if you will). Keep it up! Ehrmmm.. And could I request a video about SAS expanders/extenders?
@Shoikan thank you! i'm glad you found this video useful. I'm happy to take requests, just know I might not get to it soon as i have a huge backlog of other video requests/ideas/concepts. Is there something specific you'd like me to discuss about SAS expanders?
I already have a few videos on the IBM SAS2 expanders here:
Explanation and demo of 24xHDD setup: th-cam.com/video/qccpopxc_Uo/w-d-xo.html
Performance of SAS2 expander: th-cam.com/video/BvL70tEW3VU/w-d-xo.html
How to update firmware on IBM SAS2 expander: th-cam.com/video/Lw4TTI_HYqM/w-d-xo.html
Thank you for watching! :-)
@@ArtofServer Excellent! I didn't find your expander videos despite looking. I guess I need better glasses ;) I was wondering, since the SAS expander card does not actually use any PCIe lanes (according to my understanding, probably only for the flashing of firmware), would the following work: I have a motherboard on which the m2 NVME slot shares the PCIe lanes with the second PCIe 16x slot. If the m2 is populated, the 2nd PCIe 16x slot does not function (but gets power). Would an expander work in that slot, given that it does get power? Or does it actually need those PCIe lanes?
@@Shoikan That's a good question. I don't know how the system detects which device to give the PCIe lanes to, the M.2 or the PCIe slot? Does it try to detect a current draw and see which slot is drawing power or not? If the detection mechanism depends on detecting power draw, this scheme might not work. But if is by other means, perhaps it can work. So, I don't have a definite answer for you, but it sure does sound like a cool way to make use of a PCIe slot that otherwise is wasted with a M.2 installed. I guess you'll have to experiment and find out! Please do let us know though.. I would be curious.
To be specific, you are correct that the IBM SAS2 expander only uses the PCIe slot for power, it does not use any of the PCIe lanes. The firmware flashing is done over the SAS connection, not the PCIe lanes. So all you need is power to run the SAS expander.
@@ArtofServer I am 99% sure that the m2 slot gets precedence: I found out the hardware that they shared the lanes by inserting an M1015 in the second slot as well as an m2 drive, and wondering why the drives behind the M1015 didn't show up. I'll try to get a hold on an expander then, this does sound very hopeful indeed. I will keep you posted!
@@ArtofServer I've got the expander and.... it works like a charm! So for clarity: the motherboard is an Asrock X370 Pro4 with a lowly Ryzen 3 2200G, plus 32GB memory. I've got an NVMe drive in the m2 slot, an LSI 9201-16i in PCIe2 and the IBM SAS2 expander in PCIe4, and an Intel NIC in PCIe6. Having the NVMe drive in the m2 slot 'disconnects' the PCIe lanes from PCIe4, but it will still receive power. And voila.. Drives visible and working!
This kind of information is critical for a lot of us. I appreciate short and to the point when appropriate. Otherwise including a kitty cat is nice but only as a closer. Too damn distracting otherwise.
Thank you! I'm glad people are finding this information helpful.
Very Good Information and I thank you very much
Glad this was helpful! Thanks for watching!
Great video and presentation! I'll pay your store a visit- I need to find a pair of mini SAS SFF 8087 host to 8484 target back plane for Franin' box. But first I have to shut this puppy down and stick a cachecade 2.0 raid key on the LSI 9260-8i I got to make my SSD's happy :) See you soon, thanks again for sharing!!!
@Sean Lynch Thanks for watching!!
Thanks for this info. Very clear.
Thanks!
Here I am going through and I came through the end slide and I have to admit you have to slam on the brakes here.
"I am not here to entertain you"
That is a bit incorrect, what is considered entertainment is different from person to person, and I keep going through your back catalogue because you cover a lot of things.
However, your "mythbusting" on ZFS was great and you should share a bit more related to such findings.
An example of "entertainment / education"
1: Test the SAS controller limits vs expanders, keep RAID 0'ing SSDs in ZFS and see how many you could get before you smacked into a link limit, then add another 4 lanes and see if it clears up.
2: Hardware RAID with cache vs ZFS, which one is faster at writing asynched loads, this is something you can do in the lab and provide answers as the current Google results is polluted and doesn't contain any usable information.
That is my 2 entertainment suggestions that is also useful information to know.
I'm glad you're someone who finds my tech mumbo jumbo interesting! :-) I appreciate the ideas for future videos and I'm putting those in my list (very long list) for future ideas. Thank you for your contribution and watching my channel! :-)
Again a great job. Always enjoy your stuff.
the presentation was pretty good I'm not sure what more you could do to make it better. However, I think you should know your audience, people looking to understand the low-down workings of a protocol are not here for entertainment, you have their attention already, so the quality of the information is your biggest draw and will always be.
Thanks for your feedback. It's very much appreciated and thanks for watching!
P.S. Your style isn't Potato Jet but it's good. No need to change in my opinion.
LOL... I didn't know what "Potato Jet" was.. so I had to look it up!
This great stuff!
Thanks for watching!
You didn't cover SAS/SATA and for that matter FC/SATA interposer boards. These are all invariably only capable of of doing READ(10)/WRITE(10), which I suspect is down to the crappy 32bit CPU's they have in them. Random further note the LSI 1068 cards in IT mode report a 2TB drive size even if you have a much larger SAS drives installed, but as far as Linux is concerned they just work.
In my R410 video, I have a SAS6i/R (1068E) with IT mode firmware and using 4TB HDDs and they were fine?
@@ArtofServerOh the drives are file it's just at least on the firmware I was running on they where reported as only being 2TB in size as they flew past at boot time (rack full of J4400's with dual ported drives is pushing 500 "drives" visible to the OS). Linux reported their sizes correctly because in IT mode would appear to gather the information directly from the drive and ignores the card. Back in the day I did a week long test with f3write/f3read to convince myself that there was going to be no issues with data corruption.
Dang, I wish I'd seen this before. I got a PS4000e (SATA) and am 75% of the way through populating it with 2TB drives, and now you're messing with my head ! lol ! Mind you, I think 32TB will be enough for me for now; but my interest is piqued and I will need to get into the controllers somehow to find out what the hardware is doing driving the HDD's. I'm also wanting to make this available on the network as a storage pool for ZFS (PVE?) servers - do you have any experience of that ?
I think I must have watched most of your other videos at least once, so I don't know how this one slipped through the net, but I thank you so much for the knowledge you've imparted, and I am still, learning from. During the recent lockdown in the UK your videos were an inspiration no less. I guess the best way I can thank you is to buy some 'stuff' from your store ha ha !!
Glad this was helpful! How do you want to share the storage over the network? I appreciate the show of support, but I know shipping to Europe is not cheap so I'm happy with just the thought! :-) Thanks for watching!
@@ArtofServer Hi, I guess I'll have to use some kind of iSCSI devices and maybe an additional switch, but reading the manual and some hardware req;s from Dell suggests my Netgear GS724 should cope. I've seen some Cisco 48 port units on eBay for between £50-£100.
I've also seen that Dell/Equalogic have a version of their SAN software for VMWare but I really wanted to use Proxmox and ZFS on my other servers. However I might have to compromise on that one as I'm hoping to get hold of some firmware updates from a well-disposed ex-employee (!).
Anyhow, I'm still trying to make sense of the rest of the kit bought over the lockdown (an R410; 2 x R510; 2 x 610, 2 x 710; and an R815) ! So I'm more than likely to be hanging out in your store fairly soon ! I can cut down on shipping costs if I can put together a few items in one shipment, too.
@@rufusmurphy9990 That's quite the lab you're building up there! LOL If you're just starting out with this stuff, I might suggest checking out FreeNAS for managing and sharing your storage.
@@ArtofServer ok thanks ! What with all the other stuff I'm finding out I'd kind of overlooked FreeNas. I think I've seen mention of it running virtualized somewhere 🤔
Why LSI 9200 8e doesnt work with HP sas 6tb ?
You could have shown a practical example of how to select a good card, install and update its firmware.
There's already other videos that do that: th-cam.com/video/hTbKzQZk21w/w-d-xo.html
some hardware and software version example would have been nice, for reference.
not sure what you mean? this video is mostly about the limitations built-in the SAS protocol.
Is this still a thing? If I have a much newer LSI card, can I get more than 2TB over SATA? I don't see anything about LBAs in the docs for this card.
everything stated in this video is still true. the 2tb limit problem does not apply if you're using SAS-2 or newer hardware, and it only applies to SATA drives.
@@ArtofServer I just tested on my LSI SAS 9305-16i and all my 16TB drives are showing up as 16TB over SATA, or is that wrong? The backplane is SAS3 connected via a Mini-SAS HD, but my drives are SATA. Is that what you mean?
it was great,i enjoy it
thanks!
Sorry but is it a 2TB per drive limitation or 2tb total. Thanks and thanks for the video.
Per drive.
640K is enough for anyone - Bill Gates
LOL...
Sorry im new to this i have bought Dell Poweredge R720 with H710 mini controller and before i realized that new 12tb sas dont work on it i already buy 8 of them, so my question is there any chance to unblock this hard drives and make it work ?
I assume your H710 mini is with the stock Dell firmware? In that case, I'm not sure... might be a firmware problem. The hardware is fully capable of > 2TB HDDs, as I've demonstrated in many of my videos when using the LSI IT mode firmware. If your plan is to keep the Dell RAID firmware, I would start by making sure it is fully up to date and see if that helps your problem.
@@ArtofServer Can you give me your contact like skype or something else ?
links to my social media are at the top of my channel page
My god im hoping someone can answer this in a relatively short time frame. I have a PERC H700 card. Would updating this do anything to break the limit or am i screwed?
The PERC H700 is a LSI SAS2108 based SAS-2 6Gbps RAID controller. With the latest firmware update, it should support larger than 2TB. Typically, SAS-2 and newer hardware will do fine as long as you're not running really old firmware.
@@ArtofServer Brand new to the server space. Im setting things up in the firmware and when im trying to make a new virtual disk with a 500 gigabyte drive for my boot and a 4tb HDD, my virtual disc size limits itself to 930 gigabytes and im not sure how to solve that and make sure im getting the full 4 TB out of it.
@@ArtofServer Also, that is two for two comments you have replied to today, thank you very much for the help.
subbed :^)
nothing wrong with this presentation...
Thanks!