Comments on: LSI MegaRAID CacheCade Pro 2.0 Review – Real World Results and Conclusion

By: ??????? ????????

??????? ???????? — Mon, 28 Dec 2015 12:03:00 +0000

In reply to EricE. I have tested it, ssd need to be connected to LSI to be seen by controller as a candidate to CacheCade

By: whosscruffylookin

whosscruffylookin — Thu, 10 Nov 2011 14:37:00 +0000

Paul – hope you are still reading comments on this article! You mention a future upgrade bringing 2TB caching volumes – do you know if the 32 drives for CacheCade is also being changed? For the current 512GB/32 drive limit, my feeling is that one of the best price/performance options is the lowly Intel 311. Although only 20GB, it is SLC so well suited to CacheCade, and 32 of them in RAID0 should give over 1 million IOPS (random 4k read). However, with 2TB and 32 drives, something like 64GB Crucial M4s will perform similarly, cost slightly less, provide more cache, albeit using MLC…

By: AswP

AswP — Thu, 18 Aug 2011 12:02:26 +0000

I am in the process of purchasing a server with the IBM M5015 RAID Card which is essentially a rebadged 9260-8i (but with an IBM BIOS I believe).

It has the IBM-ised “Performance Accelerator Key” (https://www.redbooks.ibm.com/abstracts/tips0799.html) which I assume is also a rebadged LSI hardware key.

Do you have any idea if LSI will honor the upgrade to CacheCade 2.0 when it is released? (I assume IBM will take its sweet time releasing the update).

Or at worst, if I buy a similar hardware key direct from LSI with CacheCade 2.0, will it be compatible with the M5015?

By: BartS

BartS — Wed, 17 Aug 2011 14:18:03 +0000

Interesting article. According to https://kb.lsi.com/KnowledgebaseArticle16562.aspx MegaRAID controllers do not support the TRIM command. Could you explain what the effects could be for CacheCade Pro 2.0? And how about SSD’s not used as cache, but as a traditional (RAID) disk. Slower writes? More SSD wear (lower lifetime)?
TIA, Bart

By: Paul Alcorn

Paul Alcorn — Tue, 16 Aug 2011 20:50:22 +0000

In reply to EricE.

JackG-
Right now the only supported controllers are the 9260 and 9280 series. I know that they are supporting the 9265 with write caching as well in the next release. I am compiling a number of questions for LSI that i will submit, and will find out if the write caching will be extended to all controllers that support the read caching as well.
Thanks for reading!
Paul Alcorn