DP-VOL requirements

Volume type

DP-VOL (V-VOL)

The LDEV number is handled in the same way as for normal volumes.

Maximum number of DP-VOLs

For VSP G130:

• Up to 2,047 per pool (For a pool with data direct mapping enabled, up to 2,047 per pool.)
• Up to 2,047 per system (The total number of DP-VOLs and external volumes must be 2,047 or less.)

For VSP G350 and VSP F350:

• Up to 16,383 per pool (For a pool with data direct mapping enabled, up to 16,383 per pool).
  • Up to 16,375 DP-VOLs per pool (For DP-VOLs whose Capacity Saving is Deduplication and Compression)
  • Up to 16,383 DP-VOLs per pool (For DP-VOLs whose Capacity Saving is Compression)
• Up to 16,383 per system (the total number of DP-VOLs and external volumes must be 16,383 or less).
  • Up to 16,375 DP-VOLs per pool (For DP-VOLs whose Capacity Saving is Deduplication and Compression)
  • Up to 16,383 DP-VOLs per pool (For DP-VOLs whose Capacity Saving is Compression)

For VSP G370 and VSP F370:

• Up to 32,767 per pool (For a pool with data direct mapping enabled, up to 32,767 per pool).
  • Up to 32,623 DP-VOLs per pool (For DP-VOLs whose Capacity Saving is Deduplication and Compression)
  • Up to 32,639 DP-VOLs per pool (For DP-VOLs whose Capacity Saving is Compression)
• Up to 32,767 per system (the total number of DP-VOLs and external volumes must be 32,767 or less).
  • Up to 32,623 DP-VOLs per pool (For DP-VOLs whose Capacity Saving is Deduplication and Compression)
  • Up to 32,639 DP-VOLs per pool (For DP-VOLs whose Capacity Saving is Compression)

For VSP G700 and VSP F700:

• Up to 49,151 per pool (For a pool with data direct mapping enabled, up to 49,151 per pool).
  • Up to 32,623 DP-VOLs per pool (For DP-VOLs whose Capacity Saving is Deduplication and Compression)
  • Up to 32,639 DP-VOLs per pool (For DP-VOLs whose Capacity Saving is Compression)
• Up to 49,151 per system (the total number of DP-VOLs and external volumes must be 49,151 or less).
  • Up to 32,623 DP-VOLs per pool (For DP-VOLs whose Capacity Saving is Deduplication and Compression)
  • Up to 32,639 DP-VOLs per pool (For DP-VOLs whose Capacity Saving is Compression)

For VSP G900 and VSP F900:

• Up to 63,232 per pool (For a pool with data direct mapping enabled, up to 63,232 per pool).
  • Up to 32,623 DP-VOLs per pool (For DP-VOLs whose Capacity Saving is Deduplication and Compression)
  • Up to 32,639 DP-VOLs per pool (For DP-VOLs whose Capacity Saving is Compression)
• Up to 63,232 per system (the total number of DP-VOLs and external volumes must be 49,151 or less).
  • Up to 32,623 DP-VOLs per pool (For DP-VOLs whose Capacity Saving is Deduplication and Compression)
  • Up to 32,639 DP-VOLs per pool (For DP-VOLs whose Capacity Saving is Compression)

Volume capacity

46.87 MB to 256 TB for each volume (8 GB to 256 TB for V-VOLs with the data direct mapping attribute)

• When TB is specified: 0.01 TB to 256 TB including V-VOLs with the data direct mapping attribute.
• When GB is specified: 0.04 GB to 262,144 (8 GB to 262,144 GB for V-VOLs with the data direct mapping attribute)
• When MB is specified: 46.87 to 268,435,456 MB (8,192 MB to 268,435,456 MB for V-VOLs with the data direct mapping attribute)
• When block is specified: 96,000 blocks to 549,755,813,888 blocks (16,777,216 blocs to 549,755,813,888 blocks for V-VOLs with the data direct mapping attribute)

Total maximum volume capacity is as follows:

• VSP G130: 240 TB
• For VSP G350 and VSP F350: 4.4 PB (the shared memory must be installed)
• For VSP G370 and VSP F370: 8.0 PB (the shared memory must be installed)
• For VSP G700 and VSP F700: 12.5 PB (the shared memory must be installed)
• For VSP G900 and VSP F900: 16.6 PB (the shared memory must be installed)

However, if DP-VOLs of the capacity saving function are enabled and are associated with a pool, then the maximun volume capacity is the value which is deducted from the total capacity (10% of the total capacity of DP-VOLs before the capacity saving).

Path definition

Available.

LDEV format

Available. Quick Format is not available.

System option mode (SOM) 867 ON: When you format an LDEV on a DP-VOL, the capacity mapped to the DP-VOL is released to the pool as free space.

When you format a DP-VOL, the storage system releases the allocated page area in the DP-VOL. The quick format operation cannot be performed. If the LDEV format is applied to V-VOLs that are enabled for full allocation, the used capacity of the pool is not changed before the LDEV format is applied.

Caution:

• For a DP-VOL with deduplication and compression enabled, a deduplication system data volume whose capacity saving status is Failed cannot be formatted.