Base Secondary Volume

Selections for the initial S-VOL.

TC, UR and GAD only.

• Port ID: Port identifier.
• Host Group ID/iSCSI Target ID: Host group identifier or iSCSI target identifier.
• LUN ID: LUN identifier.
• Interval: The interval for allocating S-VOLs to P-VOLs.

• LDKC: "00" is displayed, cannot be changed.
• CU: For TCz: the CU number of the volume.

  For URz: the CU number of the remote system, ranging from 00 to FF.

• LDEV: LDEV number, ranging from 00 to FF.

Primary Volume Fence Level

TC or TCz only

Whether the P-VOL can be written to when the pair is split due to error.

• Data: The P-VOL cannot be written to.
• Status: The P-VOL can be written to only if the primary system can change S-VOL status to PSUE (TC) or Suspend (TCz). If the primary system cannot change S-VOL status, the P-VOL cannot be written to.
• Never: The P-VOL can be written to.

Initial Copy Type

Whether data is copied to the S-VOL when the pair is created.

• Entire Volume: Data is copied. The default.
• None: Data is not copied. If you choose this option, you must confirm the data be equal between the P-VOL and S-VOL.
• Delta: Data is not copied. UR or URz only.

  For UR: The status is changed to HOLD or HOLDING as a pair for delta resync.

  For URz: The status is changed to Hold or Holding as a pair for delta resync.

Copy Pace

TC, TCz, and GAD only.

Number of tracks to be copied per remote I/O during the operation. The default is 15. The range is different depending on the volume emulation type.

• OPEN-V (TC and GAD): The range is 1 to 4.

  - 1 is slow. This setting limits the impact on host I/O to maintain storage system performance.

  - 2 and 3 is medium.

  - 4 is fast. This setting increases the impact on host I/O and might result in decreased storage system performance.

  If you enter a number from 5 to 15, the speed of 4 (fast copy pace) is used.

• The range is 1 to 4.
  • 1 is slow.

    This setting limits the impact on host I/O to maintain storage system performance.

  • 2 and 3 is medium.
  • 4 is fast.

    This setting increases the impact on host I/O and might result in decreased storage system performance.

  If you enter a number from 5 to 15, the speed of 4 (fast copy pace) is used.

ALUA Mode

GAD only. Whether ALUA Mode is enabled:

• Enabled: The LDEV is used in ALUA mode.
• Disabled: The LDEV is not used in ALUA mode.

Initial Copy Priority

Scheduling order for the initial copy operation: range = 1 to 256, default = 32. Not displayed for GAD.

Error Level

UR and URz only.

Whether to split all pairs in the mirror if a failure occurs during this operation:

• LU: Only the failed pair is split. UR only.
• Mirror: Pairs in the mirror are split.
• Volume: Only the failed pair is split.