Folks,
I'm getting a new server for our database, and I have a quick question
about RAID controllers with a battery backed cache. I understand that the
cache will allow the cache to be written out if the power fails to the box,
which allows it to report a write as committed safely when
On Wed, 2005-09-14 at 11:25 -0700, Peter Darley wrote:
I'm getting a new server for our database, and I have a quick question
about RAID controllers with a battery backed cache. I understand that the
cache will allow the cache to be written out if the power fails to the box,
which
On Wed, Sep 14, 2005 at 11:28:43AM -0700, Jeffrey W. Baker wrote:
On Wed, 2005-09-14 at 11:25 -0700, Peter Darley wrote:
I'm getting a new server for our database, and I have a quick question
about RAID controllers with a battery backed cache. I understand that the
cache will allow the
On Wed, Sep 14, 2005 at 11:28:43AM -0700, Jeffrey W. Baker wrote:
On Wed, 2005-09-14 at 11:25 -0700, Peter Darley wrote:
I'm getting a new server for our database, and I have a quick
question
about RAID controllers with a battery backed cache. I understand
that
the
cache will
Alvaro Herrera wrote:
On Wed, Sep 14, 2005 at 11:28:43AM -0700, Jeffrey W. Baker wrote:
On Wed, 2005-09-14 at 11:25 -0700, Peter Darley wrote:
I'm getting a new server for our database, and I have a quick question
about RAID controllers with a battery backed cache. I understand that the
John A Meinel wrote:
The recent *cheap* version of a ramdisk had battery backup for 16 hours.
(Very expensive ramdisks actually have enough battery power to power a
small hard-drive to dump the contents into).
I'm guessing for a RAID controller, the time would be in the max 1 day
range.
i think
On 14-9-2005 22:03, Alvaro Herrera wrote:
On Wed, Sep 14, 2005 at 11:28:43AM -0700, Jeffrey W. Baker wrote:
On Wed, 2005-09-14 at 11:25 -0700, Peter Darley wrote:
Actually the cache will just hold its contents while the power is out.
When the power is restored, the RAID controller will
Bear in mind you will lose data if the raid controller itself fails (or the
cache memory module). Many solutions have mirrored cache for this reason. But
that's more $$, depending on the risks you want to take.
Quoting Arjen van der Meijden [EMAIL PROTECTED]:
On 14-9-2005 22:03, Alvaro
