CV capacity by emulation type for mainframe systems

Provisioning Guide for Mainframe Systems for VSP One Block 85

Version
10.5.x
Audience
anonymous
Part Number
MK-26VSP1B034-02
ft:lastEdition
2026-05-04

When creating an LDEV (CV) for the mainframe system, specify the capacity in cylinder units to create the LDEV. If you create an LDEV in units other than cylinder (such as KB) using CCI or VSP Block Storage REST API, the size of the created LDEV is adjusted to an integer multiple of the track size. If the adjusted size is not an integer multiple of one cylinder (or not an integer multiple of 44.8 cylinders for 3390-V), the LDEV might not be created.

Emulation type Minimum CV capacity (cyl) Maximum CV capacity (cyl)
3390-1 1 1,113
3390-2 1 2,226
3390-3 1 3,339
3390-3A 1 3,339
3390-3B 1 3,339
3390-3C 1 3,339
3390-9 1 10,017
3390-9A 1 10,017
3390-9B 1 10,017
3390-9C 1 10,017
3390-A1,5 1
  • For DP-VOLs: 1,182,006
  • For other volumes: 262,668
3390-L 1 32,760
3390-LA 1 32,760
3390-LB 1 32,760
3390-LC 1 32,760
3390-M 1 65,520
3390-MA 1 65,520
3390-MB 1 65,520
3390-MC 1 65,520
3390-V 2,3,4 44
  • For internal volumes: 837,760
  • For external volumes: 1,117,760

Notes:

  1. For 3390-A, the incremental unit of the CV capacity within the first 65,520 cylinders is 1 user-cylinder, and the incremented capacity between 65,521 and 1,182,006 cylinders is 1,113 user-cylinders. Therefore, if you specify a value that exceeds 65,520 cylinders, the value is changed to multiples of 1,113 cylinders. For instance, if 65,521 is specified, the value is changed to 65,667, which is 59 times 1,113 cylinders.
  2. For 3390-A, for the Compatible FlashCopy® SE volume, if you specify a value between 1 and 40,068 cylinders, the free space whose size is the sum of the specified value and 252 cylinders is required. If you specify a value of 40,069 cylinders or more, the free space calculated by this formula is required:

    40,320 cylinders + value-rounded-up-after-the-decimal-point-of-*A × 1,120 cylinders

    where *A = (specified-value - 40,068) ÷ 1,113 cylinders

  3. For 3390-V, the specified value is changed to a multiple of 44.8 cylinders (38,976 KB), and the resulting number of cylinders is truncated after the decimal point. For instance, if 10,000 is specified, 10,035 is displayed (224 times 44.8 cylinders is 10,035.2).
  4. When the CV of 3390-V is registered to the pool of Dynamic Provisioning for Mainframe, 8 GB or more free space in the CV of 3390-V is necessary. When you create a CV of 3390-V, specify the capacity as more than 9,676 cylinders.
  5. If you specify 1 cylinder to create the CV of 3390-A, 1,120 cylinders are actually used. In 1,120 cylinders, 1,113 cylinders are defined as a user-cylinder, and 7 cylinders are defined as a control cylinder. To effectively create the CV of 3390-A, specify multiples of 1,113 cylinders for the CV capacity.