Just to throw my 2 cents worth into these discussions, I've recently taken
delivery of 34 of the following machines, so around 200 TB total usable
storage. Cost is $6.7k each, so about $1200 per Terabyte.
The local disks exceed 200 MB/sec read/write speeds. As NFS servers we
can get about 100 MB/sec via one network port of 160 MB/sec via two ports
in each box.
SuperMicro H8SSL-i motherboard
AMD Opteron 175 processor
2GB unbuffered ECC DDR-400 RAM in 2x1GB (Kingston KVR400X72C3A/1G)
AOC-LPIPMI-LANG IPMI card
AIC 16-bay hot swap SATA chassis with 3 hot swap power supplies 450W
16 x 400GB Western Digital RE2 disk drives
ARECA 1160 disk controller configured as RAID 6 with 14 + 2 and no hot
spares. The disk controller is configured with one 16-disk RAID-6 set, and
two logical volumes. The first logical volume (20GB) hosts the OS, and
the second logical volume (remaining disk space) is for data storage.
1GB Areca DIMM for disk controller
Battery Back Up (BBU) units for ARECA
CDROM + floppy
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