RX6600 - LVM mirroring over 2 SAS controllers

[Branislava]

We have RX6600 server with two SAS controllers ( 0/4/1/0 and 0/4/2/0). Is it possible to put one disk behind each controller and use LVM mirroring as vg00 protection ( not to use RAID controllre funtionallity at all).

Configuration above would avoid SAS controller as SPOF.
If we put two disks befind one controller and use RAID 1, do we decrease server availability by having SAS controller as SPOF?

Thank you

[TTr]

Yes you can do it. You can even LVM mirror using RAID1 volumes on each controller for even more protection.

[Tim Nelson · Accepted solution]

No flaws to your comments.

Yes the SAS controller could be a single point of failure (anything without an "s" at the end is a SPOF ;) and configuring two of them for pass through support then using Mirror/UX should work just dandy... Be sure to test booting from both disks when done.

There obviously are a number of other SPOFs with a rx6600. Put what redundacy in that you can NICS, HBAs, etc..., is better than doing nothing.

[Sagar Sirdesai]

Hi

How about using pvg policy and then use LVM Mirroring to mirror OS disk.
PVG will make sure that the disk are mirrored to disk on the second controller.

Sagar

[Branislava]

Many thnaks to everybody :-)