I know Exchange can run on JBOD, and Raid SAN etc.
I'm thinking of implements a DAG based on physical servers with SSD, as these wont take more then 1 rack space (and rack space is expensive too here).
Maybe on sata 300 as internal disks.
I know Exchange 2010 has been optimized for sequental write actions
And in the past SSD was not that fast there, it was more used for random I/O
However its now 2010 and we can allready buy 1 Terrabyte SSD's
And it seams that many vendors of SSD have improved on sequintal write performance.
Servers are always expensive, but now i'm thinking of just some decent hardware 4 servers quadcore + 8GB mem + SSD 500GB in one dag over 2 sites.
Running all roles only the edge and OWA will be serperated to virtual host.
I have searched the web a lot, but couldnt find people telling stories how Exchange performance is on these days recent SSD's
If you have your storry let me know, which SSD vendor you used ?