On 2003-10-08T15:53:19,
anthony mayes <anmayes@siue.edu> said:
> I have 7 disks in an x86 box. I want to have 2 raid0's (concatenations)
> of 3 disks each. Then I want to raid1 (mirror) the raid0's. This
> leaves 1 disk for the OS.
That is a suboptimal allocation and will actually increase the
likelihood of failure. What you want to do is to have 3 raid1's of 2
disks each and to concatenate these 3 via raid0 or LVM.
And why are you not placing the OS itself on a RAID too? If the system
goes down, so will your application.
> with the afore mentioned configuration. First the mirror is broken and
> half of the mirror is mounted as another filesystem while the
> application continues to run on the other half of the mirror. The
> backup is performed and then the mirror is resync'ed. However, I want
> to move to x86 and linux and need to know if the same is possible and
> how to do it. Does anyone have any experience / advise?
You should concat the 3 raid1's via LVM and use LVMs snapshot facility.
(Google for the howto)
Mit freundlichen Grüßen,
Lars Marowsky-Brée <lmb@suse.de>
--
High Availability & Clustering ever tried. ever failed. no matter.
SuSE Labs try again. fail again. fail better.
Research & Development, SUSE LINUX AG -- Samuel Beckett
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