| From: | Kris Deugau <kdeugau(at)webhart(dot)net> |
|---|---|
| To: | pgsql-admin(at)postgresql(dot)org |
| Subject: | Re: databases and RAID ... |
| Date: | 2002-05-24 19:58:06 |
| Message-ID: | 3CEE9B4E.8129C7B2@webhart.net |
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| Lists: | pgsql-admin |
"Rajesh Kumar Mallah." wrote:
> I am setting up a new database server.
> the data is critical that is why i am thniking
> to mirror the SCSI disks in RAID 1 configuration.
> I do not have a hardware raid controller.
If it's that critical, you would be wise to go buy a hardware RAID
controller.
> could anyone give me some pointer , or suggest me
> if its advisable to use RAID 1 with database servers.
Probably not a bad idea, with hardware; the controller should be able
to stream the data across both disks without slowing down writes.
Software-based RAID may show slower performance as it must process the
command streams for *both* disks in the OS instead of offloading that
task to the controller... although if the disks are SCSI with a decent
SCSI card that should be minimal.
Note that if you're looking for a system you can hotswap, you will
probably need to go SCSI in any case; I'm not aware of any
hotswap-capable IDE RAID systems.
-kgd
--
Money is overrated.
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