Data transfer speed

Data transfer speed of journal volumes

Data transfer speed

between the MCU and the RCU

Data transfer speed between hosts and the MCU

Time

Normal status

Temporary increase in

 

data to be transferred

Figure 3-33 Data Transfer Speed with URz (Data Transfer Speed between the Primary Storage System and the Secondary Storage System)

Bandwidth for Data Transfer Paths

The bandwidth (i.e., the data transfer speed) of data transfer paths between the primary storage system and the secondary storage system depends on the user's environment. The bandwidth must exceed the data transfer speed in "normal status" mentioned earlier.

DKC Journal Transfer Speed

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 so enough 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 secondary DKC is 8.

Configuration that TagmaStore USP/NSC and USP V is Connected

URz can execute remote copy operations in a system configuration that USP V and TagmaStore USP/NSC is connected. Specifically, the following configurations are supported.

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Chapter 3 Preparing for Universal Replicator z/OS Operations

Hitachi Universal Replicator for IBM /OS User’s Guide

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Hitachi MP-96RD625-01 manual Bandwidth for Data Transfer Paths, DKC Journal Transfer Speed