MSA1000 ESX4.0 extend via CLI "unit extension failed"

[Walter Kloss]

I did an "expand unit 0 disk..." which went fine(RAID10 getting 2 more disks). VMware Hosts didn't crash or anything. Machines were running while array was expanding. After that I tried to extend and I get:

CLI-2> extend unit 0 add_size=286100mb
The actual new volume size will be 2288804MB.
Unit extension failed.

There are 2 ESX Hosts acessing the SAN which now consists of 16x300GB RAID10 +2xSpare:
CLI-2> show unit 0

Unit 0:
In PDLA mode, Unit 0 is Lun 1; In VSA mode, Unit 0 is Lun 0.
Unit Identifier :
Device Identifier : 600805F3-000535E0-3438186B-D471001B
Preferred Path : Controller 2 (this controller)
Cache Status : Enabled
Max Boot Partition: Enabled
Volume Status : VOLUME OK
Mirror Init Status: Complete
16 Data Disk(s) used by lun 0:
Disk101: Box 1, Bay 01, (B:T:L 0:00:00)
Disk102: Box 1, Bay 02, (B:T:L 0:01:00)
Disk103: Box 1, Bay 03, (B:T:L 0:02:00)
Disk104: Box 1, Bay 04, (B:T:L 0:03:00)
Disk108: Box 1, Bay 08, (B:T:L 1:00:00)
Disk109: Box 1, Bay 09, (B:T:L 1:01:00)
Disk110: Box 1, Bay 10, (B:T:L 1:02:00)
Disk111: Box 1, Bay 11, (B:T:L 1:03:00)
Disk201: Box 2, Bay 01, (B:T:L 2:00:00)
Disk202: Box 2, Bay 02, (B:T:L 2:01:00)
Disk203: Box 2, Bay 03, (B:T:L 2:02:00)
Disk204: Box 2, Bay 04, (B:T:L 2:03:00)
Disk301: Box 3, Bay 01, (B:T:L 3:00:00)
Disk302: Box 3, Bay 02, (B:T:L 3:01:00)
Disk303: Box 3, Bay 03, (B:T:L 3:02:00)
Disk304: Box 3, Bay 04, (B:T:L 3:03:00)
Spare Disk(s) used by lun 0:
Disk105: Box 1, Bay 05, (B:T:L 0:04:00)
Disk205: Box 2, Bay 05, (B:T:L 2:04:00)
Logical Volume Raid Level: MIRROR FAULT TOLERANCE (RAID 1)
stripe_size=128kB
Logical Volume Capacity : 2,002,704MB

CLI-2>


Anyone got an idea? Is there a max_size for extending an unit?

[Uwe Zessin · Accepted solution]

The maximum size for an MSA1000 logical disk and for an ESX SCSI LUN are 2 TeraBytes.