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by pfg
4342 days ago
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I'm no expert either, but if my napkin math is right, fully utilized in a best-case scenario (no network overhead, etc.), those disks would peak at around 30-40 MByte/s (36 disks, 10 Gbit NIC). I'm not sure if the I/O is really all that random. Theoretically, it's all sequential, but might effectively hit the disk like random I/O because of concurrent streaming sessions, varying network speed and so on. My guess is you can get pretty close to sequential I/O with some simple means like using large block sizes in your RAID, well-tuned readahead and Native Command Queuing. |
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