IBM SG24-5360-00 Manual Do Utilizador

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

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.

You initiate PPRC by using the ICKDSF PPRCOPY command with the options
shown in Table 1.

Table 1. ICKDSF PPRCOPY C o m m a n d Options

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

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.

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