| From: | Magnus Hagander <magnus(at)hagander(dot)net> |
|---|---|
| To: | Dan Birken <birken(at)gmail(dot)com> |
| Cc: | Greg Smith <greg(at)2ndquadrant(dot)com>, Scott Marlowe <scott(dot)marlowe(at)gmail(dot)com>, pgsql-performance <pgsql-performance(at)postgresql(dot)org> |
| Subject: | Re: Which RAID Controllers to pick/avoid? |
| Date: | 2011-02-03 06:45:04 |
| Message-ID: | AANLkTimWrCYnk9feGfNYSiK=NfkS2FiQmO0COCTFnjOP@mail.gmail.com |
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| Lists: | pgsql-performance |
On Thu, Feb 3, 2011 at 07:30, Dan Birken <birken(at)gmail(dot)com> wrote:
> Thank you everybody for the detailed answers, the help is well appreciated.
> A couple of follow-up questions:
> - Is the supercap + flash memory considered superior to the BBU in practice?
I think it's considered about equivalent.
The advantages of the flash one are no battery maintenance (=no
downtime every <n> years to replace it) and no "timeout" if you loose
power (but the battery backed ones are usually good for 48 hours or
so, and if you don't have a server up by then...)
> Is that type of system well tested?
Yes.
> - Is the linux support of the LSI and Adaptec cards comparable?
Can't comment on that one, sorry.
--
Magnus Hagander
Me: http://www.hagander.net/
Work: http://www.redpill-linpro.com/
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