External RAID Storage
Features
By
Patrick Schmid and Achim Roos
published
RAID 1+0 Transfer Rates
For some reason, streaming throughput wasn’t constant with 3Ware’s 9650SE controller in RAID 0+1, but reached 120-170 MB/s, depending on the command queue depth. Accusys’s iRAIDer consistently provides at least 155 MB/s when reading. The write benchmarks are similar, but 3Ware provides lower performance here.
RAID 5 Transfer Rates
In RAID 5, Accusys and AMCC are very much head to head at approximately 230 MB/s. While Accusys doesn’t show any performance impact with a degraded RAID 5 array, the AMCC solution drops to a slow 55-60 MB/s throughput when reading and 140 MB/s for writes.
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