[OpenAFS] Very large caches

Cees de Groot cg@cdegroot.com
27 Nov 2001 15:30:17 +0100


Paul Blackburn <mpb@est.ibm.com> said:
>I am curious: have you tried using RAM cache?
>In my experience with Transarc AFS on AIX, RAM cache is very fast.
>
No, for two reasons:
- It'd be smaller than what I need (the webservers have 512Mb of RAM and
  Apache wants a lot, let alone some appservers we are running);
- I don't need very high performance on the webserver side. They are
  load-balanced, cheap (cheap as in "IBM cheap" ;-)), so I'll be happy to add
  another one. Our fileservers, on the other hand, are expensive - so I want
  to offload the fileservers as much as possible to make sure that I can really
  stuff them with drives (they can do 1TB each, IIRC), instead of having a
  fileserver with 250Gb so loaded with AFS serving that I need to buy another
  one. 
Therefore, a large, even slower, cache is the best solution for our
environment, methinks.



-- 
Cees de Groot               http://www.cdegroot.com     <cg@cdegroot.com>
GnuPG 1024D/E0989E8B 0016 F679 F38D 5946 4ECD  1986 F303 937F E098 9E8B