IBM SG24-5360-00 manual Pprc Hardware Requirements, Invoking peer-to-peer remote copy

5.2 PPRC Hardware Requirements

The hardware requirements for both the primary and secondary RVAs to support PPRC are:

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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	Function	Primary	Secondary
Command		Site	Site
Option
ESTPATH	Establishes ESCON paths between the RVA of an application	Yes	No
	(primary) site and a recovery (secondary) site.
DELPATH	Deletes all established ESCON paths between primary and	Yes	No
	secondary site RVA.
ESTPAIR	Establishes a remote copy device pair.	Yes	No
DELPAIR	Removes primary and secondary volumes from PPRC and	Yes	No
	returns the devices to a simplex state.
QUERY	Queries the status of a PPRC volume pair and the paths	Yes	Yes
	associated with the RVA for the addressed device.
RECOVER	Allows the recovery site system to regain control of a DASD	No	Yes
	volume on its RVA.
SUSPEND	Suspends PPRC operation between a primary and secondary	Yes	Yes
	pair.

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, ªExamples of PPRCOPY Commandsº 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