Carl Wilhelm Soderstrom wrote:

>>A problem with hardware raid is that if your raidcontroller dies, you
>>need exactly the same controller to get your array to work again. 
>>    
>>
>
>your point is valid. :)
>that said, I haven't had a real problem with 3ware controllers dying.
>(Promise Supertraks are another matter, but perhaps the bugs have been
>sorted out by now).
>  
>

We had problem with both Supertraks and 3ware controllers.   The
Supertrak  problems may be related to using ide disks while  the 3ware
problems were (unfortunately not quite) DOA.

   Furthermore, I  find the setup with raid controllers tedious: The
modules often don't come with the distro and more often than not they do
not load at boot forcing me  to tweak /etc/rc.local.

Anyway based on theses experiences I will only uses software raid unless
we really need every  CPU cycles.  That said, I fortunately do not have
a lot of experience with having to recover from software raid: up until
now I only once had one software raid-5 go critical.

Re Khaled Hussain issues:

Linux can boot from raid-1. So you could chop off a partition from sdb
for / and put swap on sdc.  Another approach is to have  alternative
installation on a partition on sdb.  This can be quite convenient for
upgrades and error recovery.

My 2 cc.

... Matt


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