I have a bit more information to add. After doing some poking around withing HP's array configuration utility I noticed that each of the second two MSA20 chassis had duplicate "Disk Name:" entries which were reusing the same disk names that were already in use in the first two chassis.
e.g.: In the first chassis there is a "RAID-0" with the following configuration details: Array: A Interface Type: SATA Unused Space: 0 MB Status: OK Logical Drive: 1 Size: 698.6 GB Fault Tolerance: RAID 0 Heads: 255 Sectors Per Track: 63 Cylinders: 65535 Stripe Size: 128 KB Status: OK Array Accelerator: Enabled Unique Identifier: 600508B3008712F0A02CE1E1C1220001 Preferred Controller Chassis Slot: 2 Disk Name: /dev/dsk/c4t0d0 Mount Points: None Logical Drive Label: A02CE1E1PAAACAFMQXPI0OC122 physicaldrive 1:1 Box: 1 Bay: 1 Status: OK Drive Type: Data Drive Interface Type: SATA Size: 750 GB Firmware Revision: HPG8 Serial Number: 9QK2F9CN Model: HP GB0750EAFJK SATA NCQ Capable: False In the third chassis there is a "RAID-0" with the following configuration details: Array: A Interface Type: SATA Unused Space: 0 MB Status: OK Logical Drive: 1 Size: 698.6 GB Fault Tolerance: RAID 0 Heads: 255 Sectors Per Track: 32 Cylinders: 65535 Stripe Size: 128 KB Status: OK Array Accelerator: Enabled Unique Identifier: 600508B300858330AB339C51E0A30019 Preferred Controller Chassis Slot: 2 Disk Name: /dev/dsk/c4t0d0 Mount Points: None Logical Drive Label: AB339C51PAAACAEMQVKB7WE0A3 physicaldrive 1:1 Box: 1 Bay: 1 Status: OK Drive Type: Data Drive Interface Type: SATA Size: 750 GB Firmware Revision: HPG1 Serial Number: 5QK077YX Model: HP GB0750C8047 SATA NCQ Capable: False Note that the entry "Disk Name: /dev/dsk/c4t0d0" is identical for both disks which are otherwise distinct. Does anybody who is familiar with the 'hpacucli" utility know how this field is set? Is it just passed through from OpenSolaris as I suspect? If so, do you have any suggestions as to how I might configure the OS to associate the device with a different disk name? Thanks again in advance! cheers, Gabriel -- This message posted from opensolaris.org