Linux 2.6.32
Postgres 9.3
Hardware:
2 x INTEL WESTMERE 4C XEON 2.40GHZ
12GB DDR3 ECC 1333MHz
3WARE 9650SE-12ML with BBU
12 x 1TB Hitachi 7200RPM SATA disks
RAID 1 (2 disks)
Linux partition
Swap partition
pg_xlog partition
RAID 10 (8 disks)
Postgres database partition
We get 5000-7000 TPS from pgbench on this system.
The new system will have at least as many CPUs, and probably a lot more memory (196 GB). The database hasn't reached 1TB yet, but we'd like room to grow, so we'd like a 2TB file system for Postgres. We'll start with the latest versions of Linux and Postgres.
Intel's products have always received good reports in this forum. Is that still the best recommendation? Or are there good alternatives that are price competitive?
What about a RAID controller? Are RAID controllers even available for PCI-Express SSD drives, or do we have to stick with SATA if we need a battery-backed RAID controller? Or is software RAID sufficient for SSD drives?
Are spinning disks still a good choice for the pg_xlog partition and OS? Is there any reason to get spinning disks at all, or is it better/simpler to just put everything on SSD drives?
Thanks in advance for your advice!
Craig