Hi, Steve, Thanks a lot for the amazing content I've ever seen anywhere . Here is something I wanna ask 26:08->SiteMirror-FTT=1(ESA) This storage policy was created 26:46->Site Mirror- Raid1[selected ] But this policy was selected . 28:31-> T1 disk on esxi-04 has only 3 component , why ? it is not like any disk on esxi-05 Either it should be 4 component (3 RAID O child_component +Performance leg component ) or only 1 Performance leg component . I fliped back all previous video for vSAN, but did not find when policy "Site Mirror- Raid1" was created, probably it was created in your other lab or whatsoever. Would you please re-select the expected storage policy"SiteMirror-FTT=1(ESA)" to see if everything is expected , thanks again
Thanks for watching.. Very interesting. Not sure if I trust the GUI to report these things. I think there is a bug. For example, notice there is a witness on host 5. It did not show that in the previous screen.. I can not verify it now, as my lab has been re-imaged for my VCF Series..I going to do another video on this topic with the stretch cluster and the components.. Thanks again and have a good one.
If I want to create a 2 node vSAN cluster ESA with 4 x 1TB SSD drives in each node, what would be my usable capacity with mirror site with Raid 5 policy? I want to get the most capacity out of it but still have FT.
Min Hosts for RAID 5 is 3 hosts at each site for ESA. So a 2-node you can only do FTT=1. So your storage capacity is total storage / 2 Hope this helps.
@TechUnGlued I have a 4 nodes 2U Supermicro BigTwin server and each node can take 4 x NVMe SSD and 2 x SSD. Will ESA group all into one? What would be a common practice in this case?
@@mihirpatel3754 Thanks for watching. ESA will not select the drives, you select what drives you want in the pool on each server.. Also If this a Production environment I do not think the SSD's are supported in ESA. Last I looked only nVMe drive were supported with ESA... Check the H/W/ Compatibility guide.. If it is a lab.. Then don;t worry about. thanks for watching...
Thanks, but I found this a little complicated so can I summarise. For OSA and ESA, vSAN "nested" Fault Domains means 2 levels of failure, the first level is within a site, i.e., only one of the following can fail: one disk, one server, or the network connection. The second level of failure means either the Primary or Secondary site can fail. vSAN "nested" Fault Domains only apply to 2-node clusters running FTT=1, FTT=2 or RAID 5 Erasure Coding only because there is a limit of 5 Disk Groups in 2-Node Clusters.
You pretty much got it. Remember it also applies to Stretched clusters.. I have a video coming out soon on Adaptive Quorum, which you will want to watch.. Have a good one
Hi, Steve,
Thanks a lot for the amazing content I've ever seen anywhere .
Here is something I wanna ask
26:08->SiteMirror-FTT=1(ESA) This storage policy was created
26:46->Site Mirror- Raid1[selected ] But this policy was selected .
28:31->
T1 disk on esxi-04 has only 3 component , why ? it is not like any disk on esxi-05
Either it should be 4 component (3 RAID O child_component +Performance leg component ) or only 1 Performance leg component .
I fliped back all previous video for vSAN, but did not find when policy "Site Mirror- Raid1" was created,
probably it was created in your other lab or whatsoever.
Would you please re-select the expected storage policy"SiteMirror-FTT=1(ESA)" to see if everything is expected , thanks again
Thanks for watching.. Very interesting. Not sure if I trust the GUI to report these things. I think there is a bug. For example, notice there is a witness on host 5. It did not show that in the previous screen.. I can not verify it now, as my lab has been re-imaged for my VCF Series..I going to do another video on this topic with the stretch cluster and the components.. Thanks again and have a good one.
If I want to create a 2 node vSAN cluster ESA with 4 x 1TB SSD drives in each node, what would be my usable capacity with mirror site with Raid 5 policy? I want to get the most capacity out of it but still have FT.
Min Hosts for RAID 5 is 3 hosts at each site for ESA. So a 2-node you can only do FTT=1. So your storage capacity is total storage / 2 Hope this helps.
@TechUnGlued I have a 4 nodes 2U Supermicro BigTwin server and each node can take 4 x NVMe SSD and 2 x SSD. Will ESA group all into one? What would be a common practice in this case?
@@mihirpatel3754 Thanks for watching. ESA will not select the drives, you select what drives you want in the pool on each server.. Also If this a Production environment I do not think the SSD's are supported in ESA. Last I looked only nVMe drive were supported with ESA... Check the H/W/ Compatibility guide.. If it is a lab.. Then don;t worry about. thanks for watching...
Thanks, but I found this a little complicated so can I summarise. For OSA and ESA, vSAN "nested" Fault Domains means 2 levels of failure, the first level is within a site, i.e., only one of the following can fail: one disk, one server, or the network connection. The second level of failure means either the Primary or Secondary site can fail. vSAN "nested" Fault Domains only apply to 2-node clusters running FTT=1, FTT=2 or RAID 5 Erasure Coding only because there is a limit of 5 Disk Groups in 2-Node Clusters.
You pretty much got it. Remember it also applies to Stretched clusters.. I have a video coming out soon on Adaptive Quorum, which you will want to watch.. Have a good one