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SAN Metrics - August 2010

August 2010

3PAR InServ (Type 1 SAN storage)

Virtual Volumes

The 3PAR InServ storage arrays allocate space as "virtual volumes". These storage volumes only allocate real disk space when servers save data, they ignore blank space. Where traditional storage would also use up disk space on the blank areas, these virtual volumes do not. As many servers keep large amounts of blank space as "spare" capacity, this eventually results in a considerable saving, not because the extra disk hardware never needs to be purchased, but also because it would also normally take a lot of electricity to power it and cool it.

Array 1 - 3PAR InServ F400

Number of virtual volumes allocated: 72
Disk space reserved by virtual volumes: 6.4TB
Virtual disk space allocated: 27.9TB
Space saved over traditional storage: 77%


Array 2 - 3PAR InServ T800

Number of virtual volumes allocated: 70
Disk space reserved by virtual volumes: 5.2GB
Virtual disk space allocated: 25.9TB
Space saved over traditional storage: 80%



Monthly progress

The following graphs show the progress of disk space reservation during the month.

Reserved space August

Graph 1: Disk space reserved by virtual volumes

Virtual space September

Graph 2: Virtual disk space allocated

Nexsan SATABeast (Type 2 Storage)

Storage Array - KAMEOSA

Volumes allocated 16
Total space used 13091.1 GB
Space available 18913.1 GB

 

Storage Array - SEKO

Volumes allocated 16
Total space used 32003.29 GB
Space available 0 GB

 

Storage Array - TANUKI

Volumes allocated 7
Total space used 32004.1 GB
Space available 0 GB

 

Sun/Storagetek (older SAN Storage)

Summary

  TOTAL Array1 Array2 Array3 Array4
Raw capacity total 188.61TB 68.29TB 46.03TB 23.95TB 50.35TB
Raw capacity allocated 166.24TB 64.51TB 43.09TB 18.98TB 39.66TB
Raw capacity unused 22.38TB 3.78TB 2.94TB 4.98TB 10.69TB
           
Volume groups allocated 125.72TB 54.1TB 33.51TB 14.51TB 29.37TB
Parity/Hot Spare allocated 34.76TB 10.42TB 9.59TB 4.48TB 10.29TB
           
Disks used 556 188 130 99 139
Disks spare 74 18 10 14 32
           
Storage Partitions licensed   16 64 16 16
Storage Partitions used   12 11 7 11
Storage Partitions available   4 53 9 5
           
Tray spaces 36 0 0 15 21

 

Departmental / group usage summary

Storagetek usage September 2010