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Why M1015? Why not others?

T

tangoseal

[H]F Junkie
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What is the deal with the M1015 card? It appears to be the only card touted on these forums for ZFS hardware HBA.

Why cant we use other cards in jbod or just plain vanilla volume mode? Is there a catch? Something special?

What about using a less expensive PCI-e HBA that has no real hardware behind it other than to present drives?

Do you get some kind of super special sauce performance with an LSI based IBM M1015 card? Could I use an Adaptec 5805 or 6805, or LSI Megaraid etc...?

I really do not know the answers so I am asking. I assumed that ZFS is exclusively CPU based software only high performance heavy ram use disk management and a raid card is just well.... a bunch of sata/sas ports and nothing more in the case as with ZFS.
 
It's a decent LSI HBA that supports 6gb SAS/SATA drives that can be found for cheap. There are probably others, but this one works very well, so it gets lots of love.
 
Nothing particularly special about the M1015. Its popular mostly because of its widespread availability cheap on eBay. Availability of other 8-port HBAs in the +/- $75 price range is very limited - and those that are typically have warts (like OS compatibility, older parts that won't support above 2GB drives, etc).
 
What about using a less expensive PCI-e HBA that has no real hardware behind it other than to present drives?
Click to expand...

There are very few quality HBA that is less expensive than the ~$75 or so the M1015 runs for used on eBay.
 
Dell H200 is another alternative, but it goes for $120
Intel RS2WC080 goes for $200

So the conclusion is that IBM M1015 give clearly most bang for your bucks!
 
H200 or h300 usually less than m1015 as I know. Bought 2 for 75 and 90 bucks. It was many m1015 on eBay that kept the price down. I bought m1015 for $70 six months ago
 
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