looking for good reference on storage configuration

[Miles Fidelman <mfidelman@meetinghouse.net>]

Hi Folks,

Perhaps someone here might be able to point me at a reference or two on 
alternatives and best practices for configuring storage for a server - 
using a mix of SSDs and conventional drives.

I'm in the process of upgrading a small cluster of 4 machines - each 
containing RAID arrays, with DRBD across clusters to support failover.  
Easy enough with a uniform collection of HDDs.  But I can't get my head 
around how to add SSDs into the mix - what with the mismatch in access 
speeds and all, it would seem like one needs a more complex 
configuration with a level of caching between the faster and slower media.

Seems like someone would have written a book, or tutorial, or case 
study, or conference presentation - but damned if I can find anything.  
Any pointers, or guidance, would be much appreciated.

Thanks,

Miles Fidelman

-- 
In theory, there is no difference between theory and practice.
In practice, there is.   .... Yogi Berra