SUMMARY: Adding a second A5x00 array to UE4500

From: End User (
Date: Sat Aug 12 2000 - 14:21:28 CDT

Original Qustion:

> Hello all,
> I have a UE4500 with Solaris 2.6 and Volume Manager 2.6. Currently I have
> A5x00 array attached to my system. I plan on adding another A5x00 array
> but I am wondering if there are any consequences with Volume manager if my

> device aliases change due to the addition of the second A5x00.
> Specificly, I have 2 built in host bus adapters. I use all 4 GBICs and
> them going to the 2 interface boards on the A5x00. 1 HBA is on board 1 and

> the other HBA is on board 5. Here is a sample of the format command:
> 0. c0t0d0 <SUN9.0G cyl 4924 alt 2 hd 27 sec 133>
> /sbus@2,0/SUNW,socal@d,10000/sf@0,0/ssd@w2100002037162257,0
> 7. c1t0d0 <SUN9.0G cyl 4924 alt 2 hd 27 sec 133>
> /sbus@2,0/SUNW,socal@d,10000/sf@1,0/ssd@w2200002037162257,0
> 16. c3t16d0 <SUN9.0G cyl 4924 alt 2 hd 27 sec 133>
> /sbus@a,0/SUNW,socal@d,10000/sf@0,0/ssd@w210000203716458c,0
> 23. c4t16d0 <SUN9.0G cyl 4924 alt 2 hd 27 sec 133>
> /sbus@a,0/SUNW,socal@d,10000/sf@1,0/ssd@w220000203716458c,0
> All the disks on c0, c1, c3, and c4 are under volume manager control
> (although c0&c1 and c3&c4 are different paths to the same disk)
> To add the second A5x00 array, I plan on installing a new HBA on board 1
> another new HBA on board 5. I will have all 4 GBICs going to the new A5x00

> array. After I do a reconfiguration boot, will my old device aliases be
> same? If not, will Volume Manager fail due to the new device aliases?


I want to especially thank the following for responding!!
Ben Rockwood
Paul Hedgepeth
Theo Van Dinter
Doug Hughes
Richard Hogg
Luke Kanies
Arthur Darren
Brendan Choi
the veritas mailing list for posting my message

Well the concensus is that all should be well. It seems that Veritas
stores information on each disk in that is in a diskgroup. The disk "knows"
which diskgroup it belongs to as well as the volume name. So as long as
Veritas can "see" the disk, all should be well. I am still waiting for all
the equipment to arrive and i will test it out on some dev/test machines
before I add the 5200 to the 4500 production server.

I have attached the replies that I received.
Thanks again!!

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