What are Storage Pools, Thin and Thick Volumes, RAID and ISCSI LUNs?
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- เผยแพร่เมื่อ 9 มี.ค. 2019
- What is RAID and why do I need it on my NAS Drive? nascompares.com/2019/10/23/wh...
Large RAID storage for archive data storage solutions RAID is not a new thing. Originally created as means of combining multiple smaller hard drives and combining them into 1 large storage volume (so your PC would only see one hard drive like your C:/ drive, instead of several smaller hard drives connected). RAID stands for either Redundant Array of Inexpensive Disks, or Redundant Array of Independent Disks. Now the reason for the two different versions of the letters in RAID is largely due to how storage has changed. As Hard drives have grown progressively larger in capacity, the need for creating massive volumes has been outweighed by the more current trend of data storage arrays needing Redundancy.
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Super helpful video! Thanks a lot for creating this. I'm a video editor that just purchased a QNAP TVS-1282T3 for our team and it's been quite the learning curve migrating to this system from local hard drives. Thanks again for putting this video together.
Robbie, Your videos are very informative and you have taught me a lot. I am just a hobbyist when it comes to NAS so this video was perfect for me. One thing that distracted me was the audio in this video. Usually your audio is better. Thanks for your hard work in making these videos.
I'm very glad that you doing this work. It is like taking a course by watching your videos. Love it
Getting into Nas, Thanks a bunch for this vid. I really appreciate the step by step and digestible explanations.
A perfect intro and very helpful as I build what you speak of. Kudos... spot on.
YES!!! Love your work ... brilliant stuff. There is a HUGE need for this sort of 'teach the basics' video ... there are a ton of us 'amateurs' who struggle mightily to make our QNAP NAS work for us. Yes, the 'super-techs' know all this stuff but we amateurs are a waaay bigger potential market. Its just that the knowledge barrier is a bit ridiculous. I'm sort of typical ... I have >100K family and hobby pics and I bought my NAS to protect them. But now, I also love using the HDMI connection on my 251+ to watch home and downloaded movies with the QNAP apps. Now, I've actually cut off my cable TV and get all the channels I want online with my NAS ... BRILLIANT! Pls keep going on this 'teach the basics' angle!!
Very helpful, Great explanation than just reading the text. Looking forward to some of your other videos.
Perfect!! This video really helped me understand how my NAS works as far as storage is concerned. ☺
Stellar video for someone getting their feet wet. And thank you for actually leaving the text on screen. Compact concise info worth my sub!
Great video!
For me - an enthusiast for technology in general - this video is a great source of information.
Cheers.
super helpful video! I'm a new IT so I really appreciated the simple instruction
Brilliant just what I needed to know. (Need a bit more on ISCI & Luns though). Thanks a lot.
A Q on this that I haven't seen addressed!
Can you use both thick and thin in a single pool? Related is: _should_ you even have multiple volumes in a single pool, and if so- should you create a System volume? For me, that would be for qnap apps etc, and then separate volumes for what I want to back-up and share (cg works, audio media, video media, cam footage) ? It's hard to suss out the logic that folks use when deciding on creating volumes vs more directories in one large volume! I've just got a 251+, so a RAID 1. :-) Thinking a fixed Thick for System/QNAP apps, then a thin volume (or many??) for 'the rest', but very new to it all, open to spinning on a dime, etc. Excellent channel, glad you've got this all up, for sure.
3:17 - The mathematically accurate term would be 3.33 Recurring as opposed to 3.33 Infinity.
Great video regardless. Keep it up! Subscribed.
Nicely explained. Thanks!
Thanks for that, now I understand, Brill video.
So much good informations. Thank you sir.
Is...is that a calculator watch? That takes me back :D
Thank you for the volume clarification sir.
@ 04:52 you can now - QuTS allows conversion of volume from thin to thick and vice versa!
I need these sort of videos so I don’t seem like a complete dunce in the workplace 😁
I have DS1515+ with 5x 1TB drives (WD Red) all in single volume. Recently, I purchased DX517 and two 4TB drives. There is no videos that talk about the pros/cons of single volume vs. two (or more volumes) with NAS. Can someone help?
How do snapshots work different on thin vs thick volumes?
I have gone from thick volume to thin on my QNAP. No problem to convert and no data loss.
In QTS if I have a thin volume can I convert it to thick without losing the data ?
Hi I have a query , is there a benefit in creating multiple volumes in a storage pool. Or is it better to keep just one volume.
G'day mate, i'm about to setup storage pool on win10. i have a question.. how do i know which physical disk has failed once it's in the pool? they don't have HD names or identifiers? so if i have 4 10tb's and they are all the same, and one has an exclamation mark, then which one do i replace? thx
excuse me I want to ask how to fix my raid5 qnap error
Thank you for the help
Hi. I like your videos a lot. I have a small video production business in Brazil. This week i'll be receiving a ds1819+ with 10gbe card to feed media on 2 main workstations.
You say that the raid is not a backup solution, so is ir worth having 2 disks redundancy on the nas if i should have another copy of the files somewere else, os should i trust the system with the 2 redundant disks and livre with it?
Its my first nas. I am accepting devices. Thanks and keep up the good work!
I think that you could have started out with even more basic setups. I suspect that the typical viewer is likely to be a bit of a newbie ( like me ) and more likely to just have a drive or two set up as a single volume with no storage pools. And a simple Raid 1.
I found that a lot can be learned by just going through the QNAP Storage and Snapshots app. I have a 4 bay TS453A with just 2 drives in Raid 1. According to the app, I do not have a storage pool. Nor do I require a storage pool. It appears that a storage pool is there to combine two or more physical drives so they can act as a single logical drive.
You mentioned thick and thin volumes but not static volumes.
Great educational value though. Thanks.
QNAP now lets you convert from Thick to Thin. I am confused because I set up a THICK volume initially to the whole volume size. It says "Used capacity" is 6.22 out ot 12.90 TB but then under Storage Pool is shows "free space" is 1.3 TB. Not sure if I now need to convert to Thin to be able to regain that space...
I did like this video, thank you for that information! I am still a bit confused by iSCSI, though. What is the difference between using SMB or AFP to browse the server versus iSCSI? Sorry if this is an ignorant question, I am a caveman when it comes to networking and storage things, more of a hobbyist than anything else, but am trying to understand to have the best setup on my home server. Thanks again!
Interesting, I have a "convert to thin" feature on my QNAP NAS, TS451+. Are you sure you cannot convert to thin from thick? [04:50]
Storage & Snapshots > Storage/Snapshots > expand Storage Pool > Click on the Volume > Click Actions > Convert to Thin Volume
Thank you very much... I like the title: "Idiots guide to NAS storage". That ultimately makes me idiot since this is by far the only video which makes me easily understand those terms. I think I will go to flush myself out... ;-)
iSCSI is "Internet" SCSI, I think. It comes from the fact that you're doing SCSI protocol over TCP/IP (Internet Protocol).
You didn't talk about static.
I guess a volume is like a partition inside a storage pool , like on a standard hdd back in the days
Thks, tell Eddie hi
Great info - tks. One volume type missing was Static Volume? PS: Keep it up :-)
isn't thick and static the same?
@@AmazingJayB51 Not sure in general, but on QNAP, a static volume doesn't support snapshots, while a thick volume does.
@@azuravian I consider static volumes to be akin to regular HDD Partitions which have no wiggle room at all and no reserved space, hence no Snapshot. Static is my preferred choice as i like to have the extra R/W performance this type offers. I can live without the flexibility of Thin/Thick Volumes as I believe using best practice such as RAID 1 and additional external Backups is the best of all worlds.
@@AmazingJayB51 Fundamentally yes, but once a Thick Volume is created it cant be resized the same way as a Thin Volume can.
3:12 Did you mean to say 3 volumes, not 3 storage pools?
3:15 I guess you meant to say "3 volumes" instead of "3 storage pools". Kind of important in a video that claims to explain the difference :)
4:54 is not correct, well at least not with Qnap as I have sucessfully converted a thick volume to a thin volume on my Qnap NAS without any loss of data.
Let's say you have a QNAP TS-253D with 4TB drives in a RAID 1 Configuration. You can imagine somewhere in the future, you'll want to put two 8TB drives to increase your total storage. Should you set up your NAS initially with thin or thick volumes?
What did you end up doing? I'm going through the same thing right now and can't decide if I should do a static or thick
@@RetreatIsNotAnOption I went with Thick Volumes - They were a better option for what I was trying to do - mainly data storage and the ability to easily swap our my 4TB drives (one at a time) with 8TB drives (or larger) at some point down the road. :)
I ended up going with the static volume. Everything iv read says you can up grade to larger drives down the road and the static volume will grow with the larger drives. BUT once you go static you can not add other volumes like thick and thin unless you wipe the drives and start over. I think that's where everyone is getting confused. When they say the static volume is a set volume that cant be changed, it doesnt mean the size cant change if you upgrade to larger drives, they mean your stuck with that one volume that takes up the entire storage so if you needed to add another volume your screwed. I totally could be wrong about this but my understanding is you can do multiple thick and thin volumes on the drives but static volume is just one volume that takes up the entire storage so it doesn't allow for other volumes. So fingers crossed in a few years when I upgrade to larger drives, that the volume will grow lol
so can i say the thin volume is generally better than the thick volume?
I think it's something that is use-case scenario dependent, and not simply a matter of better or worse, but I'm not an expert. That's just what makes sense to me - only because if one was truly better than the other, than the worse of the two would most likely have been phased out and would no longer be an option.
@@liquid-slick Thanky you James 🙏
01:36 Jump to Point
Small Computer System Interface.
I would’ve assumed that thin and thick were reversed
"NAS is a backup" lol to hard to explain it...
You got this wrong totally. "you can't convert one to the other. You can't convert thin to thick etc" - according to Qnap, you actually can. I have problems with the rest of your explanation too, but just for the better, people should watch Qnap's statement regarding this: th-cam.com/video/lLv7QzYWRDg/w-d-xo.html
came here trying to find a Doc on Fuel rod storage and found this ... blehhhhh
Your terminology is weird. What you call “pools” I call “volumes”, and what you call “volumes” I call “partitions”.
The terminology used in the video is the standard for the technology. I'm afraid that you're going to have to adjust.
@Tommy Scott tell that to my OS and my BIOS.
@@DavidM2002 care to explain why both the BIOS and OS in EVERY COMPUTER I’ve ever owned uses the words volumes and partitions then?
@@DaedalEVE Sure, just have a look at the context and what they are applying those terms to. Just do a bit of online reading on these terms and their applications; it's all out there but your education is your responsibility, not mine.
@@DavidM2002 you didn’t explain anything, all you did was say “look it up”, then deflected.
You lost this argument.
1:25
what is actually spoken: NAS'es
TH-cam subtitles: Nazis
Oh dear... *Slowly climbs under table*
Are those your real teeth?
Do yourself a favor sort out your audio; you need to isolate to echo. Makes your videos flat, boring, and hard to watch.