Just installed 4 2tb Hitachi 5K3000 drives into a IBM x3500 7977 server. It's got a adaptec 8k serveraid card. Turns out it doesn't detect the drives as Sata II 3.0gbs. It only see's them as Sata I 1.5gbs. I checked and it appears there's a issue with the backplane that required them to limit all Sata drives to 1.5gbs.
The question is, these drives are intended for serving media only. Basically will function as a fileserver. Does it make much of a difference from a performance perspective? I intend to over time add additional 2tb matching disks to the array. The only usage would be occasional large file copies over the network to a USB external drive. Aside from random movie watching or downloading.
The OS would be Openfiler booting off a USB stick, and a seperate LSI 8308ELP controller would be used for 4x300gb 15k SAS drives serving db/vmdk. This way the box has tiered storage.
I'm also open to suggestions for a OS, I've only done some basic reading about ZFS/unraid and numerous *ix based distros. Openfiler has been running ok for the last 18months but... perhaps there is better out there. Especially since I intend to add disks as requirements increase.