April 8, 2010 at 2:52 am
hi all
we will soon be virtualizing our SQL server and moving it to a SAN.
what i am worried about is configuring the virtualisation wrong so that the SAN disc subsystem is not utilised properly.
what i will be doing is breaking the 12 physical discs into 4 logical drives
c: 2 discs -raid 1 - os
D: 6 discs - raid 5 - databases
E 2 discs - raid 1 - logs
F 2 discs - raid 1 - Tempdb
regarding disc's D,E and F, do i simply map these to drive C. as i assume if these discs are setup as virtual drives the virtual machines disks are simply files stored on the file system and i will lose the benefit of the Raid setup?
can someone advise? all advice appreciated!
April 8, 2010 at 6:08 am
ok, from my research i think i will go with the following
1. From the SAN present several LUNS, one is VMFS for the OS and the rest as RDMs
LUN1 - RAID1 (VMFS Formatted)
LUN2 - RAID1 (RDM to SQL VM)
LUN3 - RAID1 (RDM to SQL VM)
LUN4 - RAID5 (RDM to SQL VM)
Then configure the VM as follows:
C:\ VMDK on LUN1
D:\ RDM to LUN4
E:\ RDM to LUN2
F:\ RDM to LUN3
any input appreciated!
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