Are these disks on a seperate bus?

[Joe Profaizer]

I'm checking our system configuration for vPars prerequisites. I have an 9000/800/N4000-44. Can someone tell me if these two internal disks are on separate buses or on the same bus?

disk 159 0/0/2/0.6.0 sdisk CLAIMED DEVICE SEAGATE ST318404LC
/dev/dsk/c2t6d0 /dev/rdsk/c2t6d0



disk 160 0/0/2/1.6.0 sdisk CLAIMED DEVICE SEAGATE ST318404LC
/dev/dsk/c3t6d0 /dev/rdsk/c3t6d0

[Bryan D. Quinn · Accepted solution]

Hey Joe,

One is on channel 3 and the other is on channel 2. Yes, they are seperate.

-Bryan

[Joe Profaizer]

Just wanted to make sure.
So the below statement is true based on my disk configuration?

[exert from vPars requirements]
As vPars requires 1 unique boot device (connecting through SCSI or Fiber Channel card, on a PCI bus/Local Bus Adapter that is uniquely owned by that vPar).

[Bryan D. Quinn]

Hey Joe,

Although I have not experience with vPars, that statement would be correct.

-Bryan

[Bryan D. Quinn]

Joe,

Just a note here, something I thought about after my last response. If you only have these two internal disks and you are going to use vPars...say two vPars on this box. Meaning say c2t6d0 as a boot disk for vPar1 and c3t6d0 for boot disk for vPar2, what are you going to do about mirroring those drives? It seems to me that you would want to have two boot disks for each vPar ( a primary and alternate(mirror)). Just a thought, like I said I have no experience with vPars...yet. We are considering it for our DEV and QAS boxes.

-Bryan

[Joe Profaizer]

Thanks! As we are using this server for our Disaster Recovery server.

..Joe

[Bill Douglass]

If you go into stm, you'll see that 0/0/2/0.6.0 is on PCI bus adapter 0/0, SCSI interface 2/0, SCSI ID 6, lun 0. The second disk is on PCI bus adapter 0/0, SCSI interface 2/1, target 6 lun 0.

So I would say that both drives are on the same bus, but different controllers (or different channels of the same controller).

I don't know if this is acceptable for vPAR or not; someone with vPAR experience will have to make that determination.

[Caesar_3]

Hello!

Yes they on difrent scsi bus,
one on scsi 3 bus and the other on scsi 2 bus.

Caesar