Bought an old rp5470 that came with two dual-port SCSI (A6829-60101) cards and SD 2300

[Daniel Robert]

I also have 5 drives in slots 0-4 that are 36GB and another 5 drives in slots 8-12 that are 73GB.

I configured it to be split-bus with the following for redundancy:
HBA 1 Port A --> BCC 1 Port A
HBA 1 Port B --> BCC 2 Port A
HBA 2 Port A --> BCC 1 Port B
HBA 2 Port B --> BCC 2 Port B

One thing that I am not sure is what I need to do tell the system that it is configured as multi-initiator, i.e. if the HBA 1 fails, how does the system know that it should access the drived using HBA 2?

As I understand it this SCSI card is not a RAID card so I guess this would mean that hardware RAID configuration would be out of the question, is that correct?

If the above assumption is true, then the only way to do this is to mirror the disks (RAID1). I am not too familiar with setting this up using Software RAID (I am assuming that RAID 5 with 4+1 disks is not possible), so I am not sure how to go about having a volume group spanning two disks (I think I have figured that out) and having that mirror to the other two (not sure how to do that). Seeing that I have 5 disks, is there a way to define a hot spare when using software RAID?

Would you recommend a better configuration then a VG extending 2 disks and mirroring onto the other disks?

If we decide to instead go the Hardware RAID route, which controller would you recommend?

[Steven E. Protter]

Shalom,

As I understand it this SCSI card is not a RAID card so I guess this would mean that hardware RAID configuration would be out of the question, is that correct?

No, not correct.

You can use mirror-ux, an optional product you need to pay for to create software raid.

That system does not ship as far as I know with a raid card, but software raid is how we did it before raid.

The command is

lvextend -m 1 < disk path >

If you use the OS with vxvm instead of lvm the rootvg can be mirrored without additional license fee.

http://partsurfer.hp.com

Search for system model and see if any raid cards are available for it.

SEP

[Daniel Robert]

Hi Stephen, I was asking if _Hardware RAID_ was out if the question and you indicated that that was not correct, but went on to explain _Software RAID_.

I think you may have misread the question, so can I conclude from your answer that it is NOT possible to have hardware RAID with the A6829-60101?

[Torsten. · Accepted solution]

Regarding the multi initiator please post a

# ioscan -fn

and

# echo "sel dev all;info;wait;il" | cstm

Regarding hardware RAID:

you need a RAID controller HBA, like the RAID4si for that or you can use LVM mirroring.