Recommended controllers for Unraid

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This thread is meant to replace the now outdated old one about recommended controllers, these are some controllers known to be generally reliable with Unraid:


  • 2 ports: Asmedia ASM1061/62 (PCIe 2.0 x1) or JMicron JMB582 (PCIe 3.0 x1)


  • 4 ports: Asmedia ASM1064 (PCIe 3.0 x1) or ASM1164 (PCIe 3.0 x4 physical, x2 electrical, though I've also seen some models using just x1)


  • 5 ports: JMicron JMB585 (PCIe 3.0 x4 - x2 electrically)


        These JMB controllers are available in various different SATA/M.2 configurations, just some examples:



  • 6 ports: Asmedia ASM1166 (PCIe 3.0 x4 physical, x2 electrical)


         These exist with both x4 (x2 electrical) and x1 PCIe interface, for some use cases the PCIe x1 may be a good option, i.e., if you don't have larger slots available, though bandwidth will be limited:




  • 8 ports: any LSI with a SAS2008/2308/3008/3408 chipset in IT mode, e.g., 9201-8i, 9211-8i, 9207-8i, 9300-8i, 9400-8i, etc and clones, like the Dell H200/H310 and IBM M1015, these latter ones need to be crossflashed (most of these require a x8 or x16 slot, older models like the 9201-8i and 9211-8i are PCIe 2.0, newer models like the 9207-8i, 9300-8i and newer are PCIe 3.0)


        For these and when not using a backplane you need SAS to SATA breakout cables, SFF-8087 to SATA for SAS2 models:



        SFF-8643 to SATA for SAS3 models:





  Keep in mind that they need to be forward breakout cables (reverse breakout look the same but won't work, as the name implies they work for the reverse, SATA goes on the board/HBA and the miniSAS on a backplane), sometimes they are also called Mini SAS (SFF-8xxx Host) to 4X SATA (Target), this is the same as forward breakout.




If more ports are needed you can use multiple controllers, controllers with more ports (there are 16 and 24 port LSI HBAs, like the 9201-16i, 9305-16i, 9305-24i, etc) or use one LSI HBA connected to a SAS expander, like the Intel RES2SV240 or HP SAS expander.





P.S. Avoid SATA port multipliers with Unraid, also avoid any Marvell controller.


For some performance numbers on most of these see below:


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  • JorgeB changed the title to Recommended controllers for Unraid, last updated 02/2021
  • JorgeB changed the title to Recommended controllers for Unraid
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  • 3 weeks later...

I recently bought a 4U 24 bay Supermicro system off a friend, but am unable to get unRAID to see any of my hard drives. The RAID controller is a LSI Megaraid 9265-8i, and there doesn't seem to be any conclusive information out there for putting that card into IT mode. The card is connected to the backplane with a single SFF-8087 cable, though the card has two SFF-8087 ports; the 20 or so SATA drives I have installed are visible in the controller UI, but it seems like the only solution to let unRAID see them is to create single-disk RAID volumes, which seems like a bad idea. According to unRAID, my motherboard is a X9DR3-F.


Can anyone recommend an easy to find on ebay replacement card that would fit my use case?



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1 minute ago, Scottathon said:

Can anyone recommend an easy to find on ebay replacement card that would fit my use case?

Look for one of the recommended LSI HBAs listed above.

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