The five disk RAID 0 array - the pinnacle of size from the FiT500E. No other RAID configuration can offer as much disk space as the RAID 0 configuration (10TB using the current maximum 2TB drives). The Large configuration should also provide 10TB, but will not match the performance of the RAID 0 array, as it accesses each disk individually.
With the maximum five disk RAID 0 array, ATTO shows us:
There's very little performance difference between 4 and 5 drives here. In fact - the biggest change between four and five drives is the risk of data loss (with a 2% annual failure rate, the chance of data loss is nearly 10% in any given year, instead of 7.7%).
Let’s see whether HDTach can offer any additional insights on the 5 disk RAID 0 set:
Yep, the same consistent 200MBps across the array, with no significant dips, valleys or other major inconsistencies to be seen - all further confirmation that 200MBps is as hard as this RAID enclosure can go. HDTune then, to see the difference between sequential and random access:
It's interesting to see that HDTune experiences some short interruptions to transfers, which were not visible on the HDTach graph.
Unfortunately, if you need this RAID array to support high speed random access, even the 5 disk array cannot provide the increases in random IO for which hardware RAID controllers are generally revered.
