Re: Sarge RAID install

[Alexei Chetroi <debian@lexa.uniflux-line.net>]

On Mon, Aug 16, 2004 at 09:47:04AM -0300, Henrique de Moraes Holschuh wrote:
> Date: Mon, 16 Aug 2004 09:47:04 -0300
> From: Henrique de Moraes Holschuh <hmh@debian.org>
> To: debian-user@lists.debian.org
> Subject: Re: Sarge RAID install
> 
> On Mon, 16 Aug 2004, Alvin Oga wrote:
> > >   What are benefits of having swap on raid?
> > 
> > none .. i suppose ...
> > 
> > but if /dev/hda dies .. you can still be working off /dev/hdc
> > along with all your data 
> 
> Exactly.  If the drive that hosts the swap partition dies, the kernel
> goes completely crazy. RAID1 protects you from that.
> 
> If you value low downtime, then swap belongs in RAID1 or a hybrid scheme
> (such as RAID 10).
  Just a newbie question. In a hybrid scheme, do I need 4 raid
partitions on 4 different disks? Which raid level comes first, in other
words: should I stripe mirrors or mirror stripes? I think to gain some
performance stripes needs to be on different disks, but writes to be
parallel also need to go on different disks, so for maximum performance
I need 4 disks?

  Thanks in advance.

--
Alexei Chetroi