Booting order / SATA onboard / IDE card

[Tyler Aviss]

On Fri, May 14, 2010 at 11:33 AM, Lennart Sorensen
<lsorense-1wCw9BSqJbv44Nm34jS7GywD8/FfD2ys at public.gmane.org> wrote:
> On Fri, May 14, 2010 at 11:20:26AM -0700, Tyler Aviss wrote:
>> A bunch of our machines here use software RAID in case a drive goes
>> kablooey. We had some "issues" with LILO, but after swapping the
>> problematic machines to GRUB it's been fine.
>>
>> There's not actually a lot of data on them, so the primary intent is
>> that if one drive crashes, it can still boot from the other and not
>> require a bunch of time to reinstall/reconfigure the OS. Backups (at
>> least of /etc) are nice too though... corruption or dual-drive-failure
>> can still occur, and we have had one fail followed by another within a
>> day period, but it does save time on single-drive-failure issues.
>
> Certainly corruption can happen.  raid is to protect against disk
> failures, not to protect against filesystem errors (after all the
> filesystem should be identically stored on both drives in raid1).
> It is no substitute for backups.  It just prevents annoying downtime
> and reinstallation in case a disk fails.
>
> --
> Len Sorensen
> --
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Yup.

Oh, and performance-wise, you might want to skip the RAID for any
scratch or temp space (/tmp) etc. Or if you've got RAM, mount that as
a ramdisk.


-- 
Tyler Aviss
Systems Support
LPIC/LPIC-2/CLA

“Even enemies will help each other if they are together on a boat that
is in trouble. ” – Sun Tzu
--
The Toronto Linux Users Group.      Meetings: http://gtalug.org/
TLUG requests: Linux topics, No HTML, wrap text below 80 columns
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