Thecus N0503 NAS
Jan 7th, 2010 | By AnthonyUnlike JBOD and RAID 0, RAID 5 combines both speed and redundancy. Total storage is the combined total number of all disks, minus one, as redundancy where parity is distributed over all disks in the array. RAID 5 is perhaps the cheapest way to boost hard disk performance while keeping data safe.
Traditionally, especially for a NAS- type system, RAID 5 performance tags behind both JBOD and RAID 0. Maybe, we should look towards the Intel Atom CPU, or the relatively large amount of memory this unit packs, but the extra overhead due to redundancy or by design of how a RAID 5 array writes data does not hold the N0503 back.
Our reader and re-reader tests averaged out just below 50 MB/s much like the other RAID array configurations.
Writer performance averaged out approximately at 20 MB/s.
And as expected with cache accounted for, throughput just pushes past the 50 MB/s mark.