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HA advice needed
Posted: Tue Mar 23, 2010 7:47 pm
by peekay
We presently have a single Starwind server running with a single ESX 4. We are considering adding a second HA unit or perhaps a less-than-hot standby due to limitied budget. The idea is to put together a lower performance (low cost) StarWind server that can either mirror or be synced to the production unit.
Does anyone have any advice and/or experience to share?
Re: HA advice needed
Posted: Wed Mar 24, 2010 1:30 pm
by Constantin (staff)
So, you want to use one fast and one slow servers for HA?
Re: HA advice needed
Posted: Thu Mar 25, 2010 2:37 pm
by peekay
Not necessarily "slow" but not as performfing as the production unit. Use two cores, not four, use a 4 disk RAID5 with 7200RPM drives, etc.
Re: HA advice needed
Posted: Fri Mar 26, 2010 7:28 am
by JLaay
Hi Peekay,
Am I right you want to have HA with virtualized servers connected to fastest IO Starwind SAN and in case the fastest SAN crashes for whatever reason MPIO to slower SAN?
Will save you probably lots on casing, CPU, but above all disks (SAS) $$$ .
Be sure to calculate the IO penalty though and warn your boss up front
Greetz Jaap
Re: HA advice needed
Posted: Fri Mar 26, 2010 10:46 am
by Constantin (staff)
Begin your trial right now, and then you`ll be able to upgrade to version with cache for HA devices, to speed up IOPS!