The image of the card has broken so I don't know which card you are considering.
I am likely to be disposing of two 8-port SATA Adaptec 2810SA cards soon, since I have bought a 16-port 3ware 9550SX to replace it. Also, you pretty much have to run raid6 not raid5 on disks that size - the rebuild stresses the disk, and if you have had something cause one disk to fail, the likelihood of a second disk failing caused by the stress of the rebuild is even higher. I'm reconfiguring to 16 disks, 14 in a raid6 plus two hot-spares. I used to run 7-disk raid5 plus one hot spare, and it wasn't enough under the circumstances I describe (which was mostly domestic use).
Linux software raid does win, I've been using it for years, but it is not (as I have recently discovered) a substitute for backup. I recommend LTO drives, they're very practical and realistic. Alternatively, the latest generation of DLT is also quite realistic.
The throughput of cards varies dramatically. The best is the 3ware card, but they cost around 500 quid. They do transfer 300Mb/sec off 7 disks, I have yet to try off the full 14, and I wrote a kernel patch to use the card's buffering to the fullest (assuming you have no other controllers in the system).
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timeasmymeasure
no subject
Date: 2007-08-09 11:48 am (UTC)I am likely to be disposing of two 8-port SATA Adaptec 2810SA cards soon, since I have bought a 16-port 3ware 9550SX to replace it. Also, you pretty much have to run raid6 not raid5 on disks that size - the rebuild stresses the disk, and if you have had something cause one disk to fail, the likelihood of a second disk failing caused by the stress of the rebuild is even higher. I'm reconfiguring to 16 disks, 14 in a raid6 plus two hot-spares. I used to run 7-disk raid5 plus one hot spare, and it wasn't enough under the circumstances I describe (which was mostly domestic use).
Linux software raid does win, I've been using it for years, but it is not (as I have recently discovered) a substitute for backup. I recommend LTO drives, they're very practical and realistic. Alternatively, the latest generation of DLT is also quite realistic.
The throughput of cards varies dramatically. The best is the 3ware card, but they cost around 500 quid. They do transfer 300Mb/sec off 7 disks, I have yet to try off the full 14, and I wrote a kernel patch to use the card's buffering to the fullest (assuming you have no other controllers in the system).
Um. Feel free to ask if I can help more.