DavidRing.ie

There is a known bug with Solutions Enabler 7.6.0 which returns an error while attempting to create 2048GB TDEV Meta Volumes using SYMCLI on a SYMMETRIX VMAX 40K running Enginuity 5876. As you can see below sufficient space was available in the thin pool, however, when I attempted to create new devices of 2048 GB with ALL tracks to be persistently allocated, I received an error that there is not enough space to allocate the thin device:


C:\Windows\system32>symconfigure -sid 773 -cmd "create dev count=72, size=2048 GB, emulation=fba, config=tdev, meta_member_size=128GB, meta_config=striped, preallocate size=ALL, allocate_type=persistent, binding to pool=xxxx;" -v preview -nop

The configuration change session has failed.
Calculation of MAX achievable 2048GB TDEVs for the requested Pool:
Pool Enabled Capacity = 165088
Leave 10% Overhead for FAST VP Functions = 165088/100*90= 148579.2
Calculate MAX no. of 2048 TDEVS achievable as Per Customer Request = 148579.2/2048 = 72.55 = 72TDEVs
2048 / 16 = 128GIG Meta Member Size
16 X 72 = 1152 Meta members (1152 Is Calulated by script Above; just showing here for reference)

As you can see from Unisphere the Pool is 0% Subscribed and free capacity to satisfy the 72 TDEVs should not be an issue:

BUG is Fixed in 7.6.1

C:\>symcli
Symmetrix Command Line Interface (SYMCLI) Version V7.6.1.0 (Edit Level: 1755)
built with SYMAPI Version V7.6.1.0 (Edit Level: 1755)

Performing Access checks..................................Allowed.
Checking Device Reservations..............................Allowed.
Validating configuration changes..........................Validated.