I got update from reseller to purpose Hitachi Storage Technology.
I concern relate to Snap and Clone. I look in document hitachi (Clone = Copy on Write) and (Snap = Redirect on Write). Am I right ?
They design on disk level,
on 1st SAS Group Disk, they are using for SNAP.
on 2nd SAS Group Disk, they are using for SNAP/CLONE. on 3nd NL-SAS Group Disk, they are purposing full clone.
I don't know what is the real purpose of SNAP and CLONE of Storage level. When I do restore, it will restore whole volume than he will impact all VM which are stay in the same volume.
Any advice. please share me.