Giving disk a volume name or label with format command.... volname

Some site may have server with a lot number of disks attached. It can be a physical disk drives or a Logical Unit disks (LUNs) presented by a storage subsystem. It always a challenge for sysadmin to administer those disks. The question, how easy to identify the disks, which disks belong to a filesystem, which disks always busy, which disk is a part of certain JBOD or storage subsystem, which disks have already been used, etc. Furthermore how if those disks all visible by many servers configured in cluster, how it can be manage easier?.
By giving each disk a volume name or label, it may the solution and is a great help.

Solaris embed utility that is used to manage disks; format command.

FORMAT MENU:
disk - select a disk
type - select (define) a disk type
partition - select (define) a partition table
current - describe the current disk
format - format and analyze the disk
repair - repair a defective sector
label - write label to the disk
analyze - surface analysis
defect - defect list management
backup - search for backup labels
verify - read and display labels
save - save new disk/partition definitions
inquiry - show vendor, product and revision
volname - set 8-character volume name
!<cmd> - execute <cmd>, then return
quit

volname menu is the choice to instruct disk labelling.

Below is a log when we executing the command:
root@sun1: # format
Searching for disks...done
AVAILABLE DISK SELECTIONS:
0. c0t0d0
/pci@1c,600000/scsi@1/sd@0,0
1. c0t1d0
/pci@1c,600000/scsi@1/sd@1,0
2. c0t2d0
/pci@1c,600000/scsi@1/sd@2,0
3. c0t3d0
/pci@1c,600000/scsi@1/sd@3,0
4. c0t4d0
/pci@1c,600000/scsi@1/sd@4,0
5. c0t5d0
/pci@1c,600000/scsi@1/sd@5,0
6. c1t0d0
/pci@1c,600000/scsi@1,1/sd@0,0
7. c1t1d0
/pci@1c,600000/scsi@1,1/sd@1,0
8. c1t2d0
/pci@1c,600000/scsi@1,1/sd@2,0
9. c1t3d0
/pci@1c,600000/scsi@1,1/sd@3,0
10. c1t4d0
/pci@1c,600000/scsi@1,1/sd@4,0
11. c1t5d0
/pci@1c,600000/scsi@1,1/sd@5,0
12. c3t0d0
/pci@1f,700000/scsi@2/sd@0,0
13. c3t1d0
/pci@1f,700000/scsi@2/sd@1,0
14. c6t600A0B800019E29D0000153A437A9463d0
/scsi_vhci/ssd@g600a0b800019e29d0000153a437a9463
15. c6t600A0B800019E29D0000153C437A9511d0
/scsi_vhci/ssd@g600a0b800019e29d0000153c437a9511
16. c6t600A0B800019E29D0000153E437A95B7d0
/scsi_vhci/ssd@g600a0b800019e29d0000153e437a95b7
17. c6t600A0B800019E29D00001538437A93EBd0
/scsi_vhci/ssd@g600a0b800019e29d00001538437a93eb
18. c6t600A0B800019E29D00001540437A96A1d0
/scsi_vhci/ssd@g600a0b800019e29d00001540437a96a1
19. c6t600A0B800019E29D00001542437A97C7d0
/scsi_vhci/ssd@g600a0b800019e29d00001542437a97c7
20. c6t600A0B800019E29D00001544437A98F3d0
/scsi_vhci/ssd@g600a0b800019e29d00001544437a98f3
Specify disk (enter its number): 1
selecting c0t1d0:
[disk formatted]

FORMAT MENU:
disk - select a disk
type - select (define) a disk type
partition - select (define) a partition table
current - describe the current disk
format - format and analyze the disk
repair - repair a defective sector
label - write label to the disk
analyze - surface analysis
defect - defect list management
backup - search for backup labels
verify - read and display labels
save - save new disk/partition definitions
inquiry - show vendor, product and revision
volname - set 8-character volume name
!<cmd> - execute <cmd>, then return
quit
format> volname
Enter 8-character volume name (remember quotes)[""]:"Boot-Mir"
Ready to label disk, continue? y

format> disk
AVAILABLE DISK SELECTIONS:
0. c0t0d0
/pci@1c,600000/scsi@1/sd@0,0
1. c0t1d0 Boot-Mir
/pci@1c,600000/scsi@1/sd@1,0
2. c0t2d0
/pci@1c,600000/scsi@1/sd@2,0
3. c0t3d0
/pci@1c,600000/scsi@1/sd@3,0
4. c0t4d0
/pci@1c,600000/scsi@1/sd@4,0
5. c0t5d0
/pci@1c,600000/scsi@1/sd@5,0
6. c1t0d0
/pci@1c,600000/scsi@1,1/sd@0,0
7. c1t1d0
/pci@1c,600000/scsi@1,1/sd@1,0
8. c1t2d0
/pci@1c,600000/scsi@1,1/sd@2,0
9. c1t3d0
/pci@1c,600000/scsi@1,1/sd@3,0
10. c1t4d0
/pci@1c,600000/scsi@1,1/sd@4,0
11. c1t5d0
/pci@1c,600000/scsi@1,1/sd@5,0
12. c3t0d0
/pci@1f,700000/scsi@2/sd@0,0
13. c3t1d0
/pci@1f,700000/scsi@2/sd@1,0
14. c6t600A0B800019E29D0000153A437A9463d0
/scsi_vhci/ssd@g600a0b800019e29d0000153a437a9463
15. c6t600A0B800019E29D0000153C437A9511d0
/scsi_vhci/ssd@g600a0b800019e29d0000153c437a9511
16. c6t600A0B800019E29D0000153E437A95B7d0
/scsi_vhci/ssd@g600a0b800019e29d0000153e437a95b7
17. c6t600A0B800019E29D00001538437A93EBd0
/scsi_vhci/ssd@g600a0b800019e29d00001538437a93eb
18. c6t600A0B800019E29D00001540437A96A1d0
/scsi_vhci/ssd@g600a0b800019e29d00001540437a96a1
19. c6t600A0B800019E29D00001542437A97C7d0
/scsi_vhci/ssd@g600a0b800019e29d00001542437a97c7
20. c6t600A0B800019E29D00001544437A98F3d0
/scsi_vhci/ssd@g600a0b800019e29d00001544437a98f3
Specify disk (enter its number): 1
selecting c0t1d0: Boot-Mir
[disk formatted]
format> quit
root@sun1: #
Now we have a perspective of disk c0t1d0 as a sub-mirorr disk (Boot-Mir).

Note:

The volname menu is a non-destructive command. It will not destroy data on a disk. Even if the disk have partition mounted. However executing this command during disk setup is a wise initiative.