Addonics Controller – 4 Disk RAID 10
It’s time to ratchet up the pressure on the Addonics RAID controller. RAID 10 on a fully fledged RAID controller can provide the read throughput of RAID 0, the write throughput of RAID 0, and is commonly used to provide high speed random access to data (databases, mail servers and high speed file servers often use RAID 10).
Theoretically a perfect 4 disk RAID 10 set would provide 4 times the (read) throughput of a single disk, twice the throughput for writes and depending on the number and type of requests outstanding, anywhere from the same latency to ½ to ¼ that of the single disk.
ATTO makes short work of our four disk RAID 10 set:
Latency hasn’t changed, but the throughput was disappointing, matching only the 2 disk RAID 0 set. This again indicates that the RAID controller uses only 1 of the two disks in each mirror for reading, rather than both.
HDTach shows a similar result. Compared to the single disk environment, throughput is up across the board, but the latency is unchanged. It’s just not as good as it could be, especially as the 3 disk RAID 5 set provides similar performance and latency.
HDTune shows us similar results to the 3 disk RAID 5 set. Again there is slight degradation in the latency, but we still achieve reasonable throughput.
Sequential IO again shows us some longer latencies that affect not only the measurement of latency, but also the amount of data the array can transfer.
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|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?
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|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!