eight 300GB SAS drives are available. Can ESX be put on one disk as RAID-0 and others as RAID-5 ? so that in the event of disk failure data (VMs) are safe. if os disk RAID-0 fails could that be installed on replacement disk and still be able to keep VMs running?
if not RAID-1 for OS is only option for OS disk? please suggest any other RAID options.
All: many thanks for your responses. the question that remains is which RAID? my situation:
- at max handle 1 disk failure
- be more storage efficient (less disk cost)
- better I/O write perf
- if esxi 4 can handle locking better (Chopper) then why not RAID-6 or 5 for all 8 disks instead of separating OS and data volumes? does this provide ability replace failed disk and continue since OS is now mixed up with data?
- How good is RAID-50? is it better than RAID-5?