Addonics Controller – 5 Disk RAID 5
The Holy Grail for this RAID controller is the 5 disk RAID 5. Given what we’ve seen from the other configurations, this might be the best result set of all.
If we assume that the performance characteristics continue, we have more disks (so more throughput) and we're using RAID 5 (which seems to give us RAID 0 style throughput). So specifically, we should get better throughput than either of the 4 disk RAID 10 and 3 disk RAID 5 solutions and the latency should not increase.
ATTO shows us that we might be on to a winner:
Latency hasn’t changed, but the throughput was excellent, at more than three times the throughput of the single disk for the larger tests.
HDTach shows a similar result. Compared to the single disk environment, throughput is up across the board, but the latency is up significantly. Interestingly, the array delivers more than 110MBps across the entire array, instead of dropping off towards the end. For a cheap RAID controller, this is pretty impressive. In fact - the shape of the curve is so strange, we ran the same test multiple times to check the result.
HDTune shows us similar results to the 3 disk RAID 5 set, but on steroids. Again there is a significant increase in the latency, with some operations taking up to 350ms to complete, but we still achieve acceptable throughput.
Sequential IO is again a winner, never dropping below 100MBps, and demonstrating the same strange increase in performance at the ends of the disks:
-
|70.114.239.xxx |2009-12-30 06:46:59 outcast2k - product review gaps?good start on covering some of the basics. some other detais that would be good to know:
1) how long does a RAID rebuild take?
2) how do you tell how far a rebuild has left?
3) how do you tell which disk failed?
4) does the software UI handle 2+ HDM-XA's in the system?
5) how do you recover the RAID if the HDM-XA itself has failed and needs to be replaced?
6) what's the biggest sized drives supported? 2TB?
-
|219.90.134.xxx |2010-03-07 23:17:32 TERRABYTEONE - ?? 3132 pciex1 card max output is 190mb/seciv tested this.. etc..
sil 3132 pci-e x1 card )(addtronics one) or jmb 363 or highpoint 4 port x1 2300 raid card.
max oot put is 190mb sec total.. and if using 2 ports its 95mb/sec..
tested this using 4x volir wd 300g hdd
(they get each 109mb/sec)
so if using both e-sata ports.. transfer maxes out at 190mb.sec..
if using 4 hdd in raid 0 etc... max output for 4x vr 300 on intel on-board raid (x48 chipset) 500+mb/sec..
on sil using this product is.. 90mb/sec.
als tryed 4x 1.5 tb 7200.11 hdd..max out at 90mb/sec
also tryed raid 5.. 90mb/sec.
2tb hdd supported. but hardware or nonhardware raid the sil raid gear does not support partitions bigger than 2tb.(old design)
to get 6 tb hdd spac out of in i raid 0 (4x 1.5tb)
i hd to make 4 partitions .. the software is limited in what size to make. it..it was tricky.. i had to make partitin/volumns 2+ then delet and recreat smaller ones. in aparticular order.
they need to update thar raid cards. (chan...
Thanks for the great write up!