- Is there some best practices for backup and restore (VMFS size or type, VM, when to do them, impacts...)
The best practices related to VMWare are provided in the TR: http://media.netapp.com/documents/tr-3749.pdf
2. Snapshots :
Snapshot from Vmware or « snapshot from NetApp thru consistent snapshot »? The snapshot from Vmware is stable but manually you have to create it but if you want to schedule then use the SMVI which will quiesce and take the snapshot which is stable, consistent and doesn't disrupt any services.
Snapshot consistent / non consistent, what do we use? VSS or Vmware tools ? The SMVI uses the VSS and it is stable. Don't use Vmware tools which is cumbersome process.
If consistent, is it OK for all application ? Can we be 100% sure that an application will starts without corrupt data? (SQL/Oracle database for exemple ) The best SMVI for VM level but application level suggested is Snapmanager for SQL or Oracle.
Snapshot of the memory, may the VM hang? No
If we have « independent persistent » HDD and if Vmware can't snapshot it, will netapp SMVI fail or may it succeed? SMVI will fail too.
Are there impacts if Storage DRS is used in Vmware ? obviously depending upon the DRS setup.
IF I would like to snapshot a VM on a datastore and if this VM has another HDD VMDK on another VMFS, will it succeed or not? yes obviously no problem