HP P9000 for Compatible FlashCopy Mirroring User Guide (AV400-96388, October 2011)

The Remote FlashCopy operation proceeds in the following order:
• First, you issue a FlashCopy operation command to the Cnt Ac-S Z M-VOL.
• Then, the command is transmitted from the MCU (Main Control Unit) to the RCU (Remote
Control Unit).
• Finally, the storage system identifies the Cnt Ac-S Z R-VOL as the Compatible FlashCopy S-VOL,
and performs a Remote FlashCopy operation on the Compatible FlashCopy relationships (for
example, creates a relationship, releases a relationship, and displays information about a
relationship.
However, you cannot perform the Remote FlashCopy function in the following cases:
• The FlashCopy operation command is not issued to the Cnt Ac-S Z M-VOL.
• The Compatible FlashCopy S-VOL is not the Cnt Ac-S Z R-VOL.
• An extent is specified when you establish a relationship. You cannot use extents to establish
a relationship for a dataset copying.
• The Cnt Ac-S Z R-VOL is in Simplex status.
• The Cnt Ac-S Z R-VOL is in Pending duplex status.
• The Cnt Ac-S Z R-VOL is in Duplex, Suspend, or SSWS status and the Cnt Ac-S Z M-VOL is in
Simplex, or Pending duplex status.
The following figure shows Remote FlashCopy Function.
Figure 13 Remote FlashCopy function
The following table describes whether Remote FlashCopy functions can be used with other FlashCopy
functions.
18 About Compatible FlashCopy operations