Operational limits and restrictions

Nondisruptive Migration User Guide

Version
9.6.0
Audience
anonymous
Part Number
MK-92RD8086-11

The following tables include limits and restrictions that apply to nondisruptive migration.

Table. Migration and virtualization limits

Item

Limit

Source-to-target connections

  • Maximum number of source storage systems connected to one target storage system depends on the model of the target storage system:

    • VSP 5000 series: 15
    • VSP G1x00, VSP F1500 (80-06-66-00/00 or later): 15
    • VSP G1x00, VSP F1500 (earlier than 80-06-66-00/00): 7
    • VSP Gx00 models, VSP Fx00 models, VSP Nx00 models: 7
  • Maximum number of target storage systems connected to one source storage system: 1

Virtual ID limits per target storage system

Maximum number of volumes on which virtual IDs can be set:
  • VSP G200: 2,048
  • VSP G/F350: 16,384
  • VSP G/F370: 32,768
  • VSP G400, G600, VSP F400, F600, VSP N400, N600: 4,096
  • VSP G/F700: 49,152
  • VSP N800, VSP G800, VSP F800: 16,384
  • VSP G/F900: 65,280
  • VSP 5000 series, VSP G1x00, and VSP F1500: 65,280
Maximum number of migration projects per source storage system

1

Maximum number of migration jobs that can run concurrently

10

Maximum number of volumes per migration job

500

Maximum number of hosts per migration job

100

Table. Restrictions

Item

Restrictions

Data direct mapping attribute

To create a TrueCopy or Universal Replicator pair in the target volume by enabling the data direct mapping attribute, the microcode version of the storage system of the secondary site must be 80-03-2X-XX/XX or later (VSP G1000) or 83-03-0X-XX/XX or later (VSP G200, G400, G600, G800).

Host mode and host mode option of host groups

The source and target storage systems must use the same host mode and host mode options for host groups connected to the server.

If the host mode of the host group for the source storage system is HP-UX, you do not need to add the migration target host group number to the virtual storage machine.

If the host mode of the host group for the migration-source storage system is HP-UX, you do not need to add the host group number of the migration target to the virtual storage machine. (If you add a host group number, it will not be used.)

Security authentication function (FCSP Authentication)

Do not set the security authentication function (FCSP Authentication) for the port of target storage system, or you may not be able to log in from the server.

Volume formatting and shredding

You cannot format or shred the mapping volumes on which you are migrating the data in the target storage system.

SCSI-2 Reserve and SCSI-3 Persistent Reserve commands and target volume cache mode

When the server issues SCSI-2 Reserve or SCSI-3 Persistent Reserve commands and the cache mode of the target volume is set to cache through:

  • Do not change the number of external storage path definitions between the target and source storage systems.
  • The Reserve or Persistent Group Reserve information is not displayed on the LUN Management window of the target storage system. Instead, check the information in the LUN Management window of the SVP of the source storage system.

When the mode is set to anything other than cache through, the information is displayed in the LUN Management window of the target storage system. If more than one path is set between the source and target storage systems, only one of these paths is displayed in the KEY field.