vSphere v6.0 Update3
16 node VMware cluster
HPE BL360c Gen9 blades
Compellent SAN (connecting to each blade via hardware HBA)
20x 4TB LUNs/datastores
Everything connects with multiple 10GB lines, SAN direct connects with 10GB lines
Here is my question; how big is too big for a VMDK? I know that v6 can go up to 62TB and that is great, but is it a good idea?
I have one VM with the following configuration:
All of these drives/VMDKs are on a single 10TB LUN dedicated to this VM
C:150GB single VMDK
D:60GB single VMDK
E:900GB single VMDK
F:2300GB single VMDK
G:10GB single VMDK
H:1500GB single VMDK
I am told by the customer that the F: and H: drives will grow by ~4TB a year for the foreseeable future (the office is going paperless).
So, back to the question; while these VMDK sizes are "allowed", even if they get larger, at what point does it make sense to convert this VM back to a physical, SAN connected, server?
Performance, snapshots, backups, restores - all of these things grow considerably in time to complete as these VMDKs get larger.
Any help or past experiences is much appreciated.
- Dave Claussen