I have a HP DL380 G5 with 8x146GB single port SAS SSF disks (DG146ABAB4).

A couple of them have failed and I can't find any new single port disks anymore. They all seem to be dual port. I'm wondering if I can mix the two disk types? Are dual port backwards compatible?

2 Answers 2


Yes, the dual-port drives are fine for internal chassis use. In fact, that's pretty much all you'll find available now. HP also sends the dual-ported 6G drives as warranty replacements. They are entirely backwards-compatible.

  • Dual port SAS disks have additional pins on the SAS connector for multipathing for higher availability and/or double bandwidth. Naturally, they will work with single link too...
    – GioMac
    Feb 16, 2021 at 12:16

Like ewwhite has said in the Accepted answer, it is possible to mix dual and single Port SAS disks in HP ProLiant Servers. Here's the official information from the HPE (Hewlett Packard Enterprise) web site:

http://h20564.www2.hpe.com/hpsc/doc/public/display?docId=emr_na-c01766210-1&lang=en-us&cc=us [ https://support.hpe.com/hpesc/public/docDisplay?docId=emr_na-c01766210-1 ]

HP SAS Enterprise and Midline Hard Drives - Compatibility Between Single Port (SP) and Dual Port (DP) SAS Hard Drives on HP ProLiant Servers

Is it possible to mix and match Single Port (SP) and Dual Port (DP) hard drives in HP ProLiant Servers and certain HP SAS compatible MSA storage systems, such as the Storageworks 60?
Yes. The DP drives are fully backwards compatible with the SP drives in single HP SAS domain configurations. However, only the DP drives can be used in dual HP SAS domain configurations. For additional information on dual domain SAS, refer to the Redundancy in enterprise storage networks using dual-domain SAS configurations document. Click here to go to "Redundancy in enterprise storage networks using dual-domain SAS configurations". [ https://support.hpe.com/hpesc/public/docDisplay?docId=c01451157 ]

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