[Gllug] cheap disk source

[John Hearns]

tid wrote:
> I may be teaching my grandmother to suck eggs here, but why not factor 
> in the price of
> a spare PSU/RAID controller & disk at the same time. This is borne out 
> of a number of
> experiences where management thought that RAID=100%uptime.

If you want high uptime you should not be using internal disks.
Spec an external RAID array with N+1 hot swap power supplies, and two 
controllers.

If you want more concerned about uptime, spec dual fibre channel HBAs in 
your servers and use multipathing. Our current RAID arrays also support 
multipathing over SAS, which is probably more sensible for a single server.

And while you're on the uptime question, buy two of those servers and 
cluster them with HA software.




-- 
      John Hearns
      Senior HPC Engineer
      Streamline Computing,
      The Innovation Centre, Warwick Technology Park,
      Gallows Hill, Warwick CV34 6UW
      Office: 01926 623130 Mobile: 07841 231235
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