LSI MegaRAID SAS

1. Card information

MegaRAID SAS is the current high-end RAID controllers series by LSI.
It is fully hardware RAIDs controllers supporting RAID5, at least, with SAS or SATA interfaces.
If you're a looking for information about MegaRAID SCSI connectors, please look at LSIMegaRAID instead.

All theses card can be used with stock Linux kernel which includes a working driver.
It's quite new and thus, may be missing in some not-up-to-date distributions.

There is currently no known opensource tool for theses cards.
Some old MegaRAID SAS can be used with megactl, but none of current cards works.
However LSI provide megacli, a proprietary management command line utility which is rather hard to use.

2. Linux kernel drivers

Driver	Supported cards
megaraid_sas	LSI MegaRAID SAS

megaraid_sas is part of mainstream Linux kernel and should be available in all current distributions.
However, please that most of old distributions won't have this driver.

If your card use megaraid_mm or megaraid_mbox driver, please look at LSIMegaRAID instead.

Some lspci -nn' output examples:

• 02:0e.0 RAID bus controller [0104]: Dell PowerEdge Expandable RAID controller 5 ![1028:0015]

3. Management and reporting tools

megactl includes a SAS compliant binary named megasasctl. It seems to work on old card but fails with the new one.
If megasasctl doesn't work for you, you will have to use the proprietary cli utility from LSI: megaclisas.

For managing the card there are no alternatives to megaclisas.