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ESXi 6 Lun Extents
My organization has recently purchase a NetApp SAN and the max Lun size in VMware is 15TB. We have a request to preset a 20TB Lun to a VM. I know using extents is an option but feel very uneasy doing this since if something happens to one Lun, the whole volume goes offline. Am I being overly paranoid? How are other dealing with this issue?
VMware
Last Comment
Andrew Hancock (VMware vExpert PRO / EE Fellow/British Beekeeper)
Which Netapp SAN are you using? Are you using 7 mode or cDot?
ASKER
We have 4 FAS2620 nodes. Also we are using Fiber cables. Our SAN Admin stated he confirmed through support that a max Lun size for NetApp in Vmware is 15TB
https://community.netapp.com/t5/Data-ONTAP-Discussions/VMware-max-LUN-size/td-p/142292
https://www.netapp.com/us/media/tr-4597.pdf
https://community.netapp.com/t5/Data-ONTAP-Discussions/VMware-max-LUN-size/td-p/142292
https://www.netapp.com/us/media/tr-4597.pdf
That's a NetApp limitation LUN Size Max 16TB (well OnTap to be correct), if you need larger datastore use Extents.
Just document!
or use NFS.
Just document!
or use NFS.
ASKER
Any performance issues with using extents?
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Welcome to the 21st Century! - LOL!
Why ? Is this what you created ? Max LUN Size is 64TB to an ESXi host.
Paranoia! But you have a right to question, we've had a number of Posts on EE, where a LUN has been deleted, removed, and the WHOLE datastore has then been corrupted!!!
Document it, so the VMware/Storage Team know which LUNs, e.g. LUN 1 + LUN2 = DATASTORE 4...
Are you expanding the existing LUN, or adding another LUN to create the datastore.