Re: [PLUG] RAID for swap?

[Walt Mankowski <waltman@pobox.com>]

On Thu, Apr 11, 2013 at 10:49:21AM -0400, Casey Bralla wrote:
> Recently, I got a lot of good advice about how to setup RAID and I have a 
> follow-up question.
> 
> Should I RAID the swap space too?
> 
> It seems to me that having the swap partition RAID'd would increase the 
> reliability of swap, at the penalty of execution speed when it is needed.  
> Alternately, I could simply create two swap partitions, and only use 1 of 
> them.  If that disk died, I could just manually activate the swap on the other 
> disk.
> 
> BTW, my situation is that I have 2 identical SATA disks.  I thought I would 
> partition them identically, with a single large root partition and a swap 
> partition.  I could put the /boot partition separately on one of the disks in 
> lieu of the second swap partition, but then I've reduced the reliability of 
> booting if one disks dies.
> 
> Any thoughts or suggestions?  TIA!

If you used swap files instead of a swap partition, and put the files
on a RAID drive, wouldn't the files have the same protection that any
other file on RAID would?

Walt

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