On 9/2/2010 2:54 AM, Toke Eskildsen wrote:
We've done a fair amount of experimentation in this area (1997-era SSDs vs. two 15.000 RPM harddisks in RAID 1 vs. two 10.000 RPM harddisks in RAID 0). The harddisk setups never stood a chance for searching. With current SSD's being faster than harddisks for writes too, they'll also be better for index building, although not as impressive as for searches. Old notes at http://wiki.statsbiblioteket.dk/summa/Hardware
How does it compare to six SATA drives in a Dell hardware RAID10? That's what my VM hosts have, which each run three large shards and a couple of supporting systems.
