LSI 9265-8i MegaRAID Card vs Adaptec 6805 RAID Card – The Ultimate 6Gb/s RAID Showdown

SANDISK EFD – IOMETER TESTING: 4K MIXED READ/WRITE

The Iometer testing continues with mixed read and write results for both controllers. The mixed read/write testing is the hardest for RAID arrays. The parameters of testing for this remain the same, with 8GB testfiles, 2 managers, and 64k Stripe Size for both controllers.

We will compare results of the two controllers directly, as the scale of the differences in performance, while still large, aren’t nearly as noticeable. The LSI leads by multiples of 3 in the RAID 0 mixed read/write testing scenario. Simply amazing to see a random read/write score that high with a mixed ratio here, a testament not only to the 9265, but also the Lightning LS drives.

RAID 5 results are again very lopsided in favor of the LSI controller. This test of RAID 5 with the mixed read/write ratio shows us clearly that there is surely no area that the Adaptec can best the LSI controller.

The 4k results for the Adaptec merely show how hard it is for most controllers to deal with any form of RAID 5 writing. The 9265 is simply herculean here, absolutely dominating the competition.

42
Leave a Reply

avatar
28 Comment threads
14 Thread replies
0 Followers
 
Most reacted comment
Hottest comment thread
22 Comment authors
NormlaurensE71rsqMoheban79 Recent comment authors
  Subscribe  
newest oldest most voted
Notify of
Eero Rantala
Guest
Eero Rantala

I unfortunately have the Adaptec 6805 controller and… LOL… where is my garbage can…
I’m running a setup with 4x Kingston 240GB HyperX in R5, the ATTO results arent that shabby… I get 1.5GB/s write and 2.1GB/s read (seq) but…. the short random reads are just terrible… in Winsat it’s only 170 MB/s(!?!).
Funny thing is that when I turn off controller cache I get 9000 MB/s in sequential 64 read… 🙂
I dont however get more than 5ms max response time vs your 55ms value.

Eero Rantala
Guest
Eero Rantala

Winsat with all cache OFF (Swedish W7): > Disk Sequential 64.0 Read 8922.99 MB/s 7.9 > Disk Random 16.0 Read 183.16 MB/s 7.6 > Responsiveness: Average IO Rate 1.01 ms/IO 7.9 > Responsiveness: Grouped IOs 7.94 units 7.5 > Responsiveness: Long IOs 1.98 units 7.9 > Responsiveness: Overall 15.69 units 7.9 > Responsiveness: PenaltyFactor 0.0 > Disk Sequential 64.0 Write 576.71 MB/s 7.9 > Genomsnittlig l„stid med sekventiella skriv†tg„rder0.494 ms 7.9 > Svarstid: 95:e percentilen 0.936 ms 7.9 > Svarstid: maximal 2.820 ms 7.9 > Genomsnittlig l„stid med slumpm„ssiga skrivningar0.542 ms 7.9

Eero Rantala
Guest
Eero Rantala

Winsat all cache ON: > Disk Sequential 64.0 Read 1207.40 MB/s 7.9 > Disk Random 16.0 Read 170.22 MB/s 7.6 > Responsiveness: Average IO Rate 0.26 ms/IO 7.9 > Responsiveness: Grouped IOs 4.58 units 7.9 > Responsiveness: Long IOs 0.45 units 7.9 > Responsiveness: Overall 2.04 units 7.9 > Responsiveness: PenaltyFactor 0.0 > Disk Sequential 64.0 Write 882.76 MB/s 7.9 > Genomsnittlig l„stid med sekventiella skriv†tg„rder0.239 ms 7.9 > Svarstid: 95:e percentilen 1.013 ms 7.9 > Svarstid: maximal 5.359 ms 7.9 > Genomsnittlig l„stid med slumpm„ssiga skrivningar0.326 ms 7.9

Eero Rantala
Guest
Eero Rantala

Next steps to do:
PC –> Adaptec –> Garbage bin
LSI –> PC

Eero Rantala
Guest
Eero Rantala

Hahaaa… my 6805 beats the LSI in the AS SSD copy benchmark 2 of 3:
ISO 880 / 1.22
Program 377 / 3.73
Game 701 / 1.97

SSD QUICK SEARCH