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SAN Metrics - June 2010

June 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: 38
Disk space reserved by virtual volumes: 3TB
Virtual disk space allocated: 16TB
Space saved over traditional storage: 81%


Array 2 - 3PAR InServ T800

Number of virtual volumes allocated: 6
Disk space reserved by virtual volumes: 47GB
Virtual disk space allocated: 3.1TB
Space saved over traditional storage: 98%



Monthly progress

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

Reserved Space July 2010

Graph 1: Disk space reserved by virtual volumes

Virtual VV space July 2010

Graph 2: Virtual disk space allocated

Nexsan SATABeast (Type 2 Storage)

Storage Array - KAMEOSA

Volumes allocated 14
Total space used 8995.1 GB
Space available 23009.1 GB

 

Storage Array - SEKO

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

 

Storage Array - TANUKI

Volumes allocated 16
Total space used 32003.2 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 180.19TB 65.75TB 43.3TB 23.95TB 47.2TB
Raw capacity unused 8.42TB 2.55TB 2.73TB 0TB 3.15TB
           
Volume groups allocated 134.52TB 55.07TB 33.58TB 18.35TB 35.19TB
Parity/Hot Spare allocated 38.02TB 10.68TB 9.73TB 5.61TB 12.02TB
           
Disks used 605 199 134 113 159
Disks spare 25 7 6 0 12
           
Storage Partitions licensed   16 64 16 16
Storage Partitions used   14 11 7 12
Storage Partitions available   2 53 9 4
           
Tray spaces 36 0 0 15 21

 

Departmental / group usage summary

STK departmental usage July 2010