HP StorageWorks XP24000 Continuous Access Journal Software User and Reference Guide, v01 (T5278-96001, June 2007)

Journal Transfer Speed of the DKC

The journal transfer speed of the DKC depends on the number of paths used for transferring journals. The

number of paths for transferring journals must be enough so that the journal transfer speed exceeds the

data transfer speed in the normal status mentioned earlier. The maximum number of paths for each pair

of the

primary DKC and the secondar y DKC is 8.

Performing Remote Copy Between an HP XP12000 Disk Array

and

an HP XP24000 Disk Array

Continuous Access Journal can be used to perform remote copy operations between an HP XP24000

Disk

Array and an HP XP12000 Disk Array. Data can be copied from the HP XP24000 Disk Array to the

XP12000 Disk Array, or vice versa.

This section explains the following:

• Logical storage system (LD KC) that can be c onnected to an HP XP12 0 00 D isk Array (see

“Logical Storage System (LDKC) that can be Connected to an HP XP12000 Disk Array” on page 74)

• Volume pair that can create pairs (see “Volume that canBeUsedtoCreatePairs” on page 75)

• ConnectionwithanHP XP12000 Disk Arrayina 3DCremotecopyconﬁguration (see

“Connection with an HP XP12000 Disk Array for a 3DC Remote Copy Conﬁguration”onpage75)

Logical Storage System (LDKC) that can be Connected to an HP XP12000

Disk

Array

To execute a remote copy from an HP XP24000 Disk Array to an HP XP12000 Disk Array, or vice versa,

conﬁgure

logical path between the LDKC of the HP XP24000 Disk Array and the HP XP12000 Disk

Array. In

this

case, the logical path can be conﬁgured only between LD KC00 on the HP XP24000 Disk

Array and

XP12000 Disk Array. Therefore, you cannot conﬁgure a logical path between LDKC01 on

the HP XP24000 Disk Array and HP XP12000 Disk Array (see Figure 35 on page 75).

More than one H P XP12000 Disk Array can be connected to LDKC00 on the HP XP24000 Disk Array.

Note:

The

are only two LDKCs for the current version, which are LDK C00 and LDKC01. LDKC01 and

an HP XP12000 Disk Array cannot be connected.

Note:

The steps to conﬁgure a logical path between an HP XP24000 Disk Array and an HP

XP12000

Disk

Array are the same as the steps to set the logical paths bet ween volumes on an

XP240

00 Disk Array. For detaile d information about the steps to conﬁgure logical paths, see

“Conﬁg

uring Storage Systems and Logical Paths” on page 95.

Preparing for Continuous Access Journal Operations