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5.2 PPRC Hardware Requirements
The hardware requirements for both the primary and secondary RVAs to support
PPRC are:
•
RVA Model T82
•
Feature code 7001
•
PPRC-enabling LIC
(LIC level T04.05.xx is the minimum level)
•
Remote Service capability
Note: We recommend that 4 GB of cache be installed on the RVAs to maximize
performance. We also recommend four ESCON links between the two
subsystems.
5.3 Invoking peer-to-peer remote copy
You initiate PPRC by using the ICKDSF PPRCOPY command with the options
shown in Table 1.
Table 1. ICKDSF PPRCOPY Command Options
PPRCOPY
Command
Option
Function Primary
Site
Secondary
Site
ESTPATH Establishes ESCON paths between the RVA of an application
(primary) site and a recovery (secondary) site.
Yes No
DELPATH Deletes all established ESCON paths between primary and
secondary site RVA.
Yes No
ESTPAIR Establishes a remote copy device pair. Yes No
DELPAIR Removes primary and secondary volumes from PPRC and
returns the devices to a simplex state.
Yes No
QUERY Queries the status of a PPRC volume pair and the paths
associated with the RVA for the addressed device.
Yes Yes
RECOVER Allows the recovery site system to regain control of a DASD
volume on its RVA.
No Yes
SUSPEND Suspends PPRC operation between a primary and secondary
pair.
Yes Yes
Note: The ICKDSF PPRCOPY commands for the primary device are issued at the primary (application) site.
Commands for the secondary device are issued at the secondary (recovery) site.
Note: The PPRCOPY QUERY VOLUME command should be used to display the
subsystem identifier (SSID), serial number, and channel connection (logical)
address (CCA) of a device. (The CONTROL CONFIGURE (DISPLAY) command
does not work with the RVA. It works only with the 3990/9390 storage controls.)
For an example of using the PPRCOPY command, see 5.5, “Examples of
PPRCOPY Commands” on page 36. For a more detailed description of the
PPRCOPY command, see
Device Support Facilities User
′
s Guide and Reference,
Release 16 Refresh with Peer-to-Peer Remote Copy
, GC35-0033.
Chapter 5. Peer-to-Peer Remote Copy 35