Hitachi Truecopy Remote Commands; Figure 2.5 Package Transfer On High Availability (Ha) Software - Hitachi TAGMASTORE MK-90RD011-25 User Manual

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Figure 2.5 Package Transfer on High Availability (HA) Software
2.2.4

Hitachi TrueCopy Remote Commands

Figure 2.6 illustrates a Hitachi TrueCopy remote configuration. The Hitachi TrueCopy remote
commands support a function which links the system operation for the purpose of volume
backup among UNIX servers with the operation management of the server system. The
Hitachi TrueCopy remote pair commands are also used to copy volumes in the failover
configuration of the servers and to recover the volumes after the takeover.
Pair creation command: Creates a new volume pair. Volume pairs can be created in
units of volume or group.
Pair splitting command: Splits a volume pair and allows read and write access to the
secondary volume.
Pair resynchronization command: Resynchronizes a split volume pair based on the
primary volume. The primary volume remains accessible during resynchronization.
Swaps(p) option (TrueCopy only). Swaps volume from the SVOL(PVOL) to
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PVOL(SVOL) at suspending state on the SVOL(PVOL) side and resynchronizes the
NEW_SVOL based on the NEW_PVOL. At the result of this operation, the volume
attributes of own host (local host) become the attributes for the NEW_PVOL(SVOL).
Event waiting command: Used to wait for completion of volume pair creation or
resynchronization and to check the pair status.
Pair status display and configuration confirmation command: Displays the pair status
and configuration of the volume pairs, used for checking the completion of pair creation
or pair resynchronization.
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Hitachi Command Control Interface (CCI) User and Reference Guide
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