[Beowulf] 32 nodes cluster price

Eugen Leitl eugen at leitl.org
Sun Oct 7 13:17:37 EDT 2007


On Sun, Oct 07, 2007 at 12:54:42PM -0400, Mike Davis wrote:

> Controllers can have problems, but so can software.

The point is that you have to keep a hardware spare with hardware RAID.
This can make things much more expensive. Also, software RAID
is typically free, while a hardware RAID of similiar performance several
k$, and you have to double that if you have to keep a hardware spare.

A minus point that software RAID can write out garbage from bit-flipped
RAM when the power goes out. This is more of a problem with some file systems
(xfs?) than with others. Not a problem with UPS, though.

-- 
Eugen* Leitl <a href="http://leitl.org">leitl</a> http://leitl.org
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