Support / help wanted iSCSI on vmware 6.7

[comsisnet]

Hi. Please!

We have a litte datacenter, where We have ome servers NAS
dedicated running TrueNAS12 core.

On these NAS are configured a iSCSI ethernet (on SSD RAIDZ)
LUNs showed to vmware ESXI 6.7 and works normally.
(for virtual machines)

But when We need attach these LUN (move)
or connecting to anhoter vmware 6.7 server host, these new datastore
on this host can be accesible, (status up)
but, when We try to add to new datastore on vmware,
it doesn't preserve the datastore sign, and only
can be added formating and erasing all data on the LUN.

Please, what is the cost of you support in order to bring the
techcnical data for fix this wrong and undesirable behavior.

Thanks in advance.

Luis.

 

[comsisnet]

thanks for reading. Here sharing the solve. Thanks vmware.!

https://kb.vmware.com/s/article/1011387 solve

 

[MrGuvernment]

Just as a note, also consider that 6.7 is out of general support.

Reminder: vSphere 6.5/6.7 End of General Support | VMware

The End of General Support for vSphere 6.5 and vSphere 6.7 is October 15, 2022.

core.vmware.com

 

[NugentS]

Also - RaidZn is highly not ideal for iSCSI. You should be using mirrors. In general VM's require high IOPS - and a RAIDZn array only provides the IOPS of a single disk.

 

[comsisnet]

Thank you for your valuable advice. NOTE: The issue also affected ESXi version 7

 

[Davvo]

@NugentS point more in depth.

Some differences between RAIDZ and mirrors, and why we use mirrors for block storage

ZFS is a complicated, powerful system. Unfortunately, it isn't actually magic, and there's a lot of opportunity for disappointment if you don't understand what's going on. RAIDZ (including Z2, Z3) is good for storing large sequential files...

www.truenas.com