Re: Two hard drives --- what to do with them?

[Ben <bench@xxxxxxxxxxxxxxx>]

Just remember that batteries (in both RAID cards and UPSes) wear out and will eventually have to be replaced. It depends how critical your data is, but if you only have a UPS, you risk badness in the off chance that your power fails and you haven't replaced your UPS battery.

On Feb 27, 2007, at 12:27 AM, Peter Kovacs wrote:

I wonder if running a machine on a UPS + 1 hot standby internal PS is

equivalent, in terms of data integrity, to using battery backed write

cache. Instinctively, I'd think that UPS + 1 hot standby internal PS

is better, since this setup also provides for the disk to actually

write out the content of the cache -- as you pointed out.