Table 3-5 RAID Level Configuration of URz

Item

Support specifications

RAID configuration of data volume and journal volume

RAID1, RAID5, and RAID6 can coexist.

RAID1, RAID5, and RAID6 can coexist in the same journal group.

The Maximum Number of Pairs

Note: The number of pairs that can be created in a storage system is limited.

Use the number of cylinders and bitmap areas to calculate the maximum number of pairs that can be created in a storage system.

The number of cylinders:

The number of pairs of a primary data volume and a secondary data volume is limited by the number of cylinders of the volumes to be paired (i.e., the capacity of the volume. If VLL is used, the number of pairs depends on the number of cylinders specified by VLL.). The limit on the number of pairs is applied to both the primary storage system and the secondary storage system. Table 3-6 illustrates the number of cylinders according to each emulation type.

Table 3-6 Number of Cylinders According to Each Emulation Type

Emulation type

Number of Cylinders

 

3380-J

 

885

 

 

 

 

 

 

 

3380-E

 

1,770

 

 

 

 

 

 

 

3380-K

 

2,655

 

 

 

 

 

 

 

3390-1

 

1,113

 

 

 

 

 

 

 

3390-2

 

2,226

 

 

 

 

 

 

 

3390-3

 

3,339

 

 

3390-3R

 

 

 

 

 

 

 

 

 

3390-9

 

10,017

 

 

 

 

 

 

 

3390-L

 

32,760

 

 

 

 

 

 

 

3390-M

 

65,520

 

 

 

 

 

 

 

H6586-G

 

1,770

 

 

 

 

 

 

 

H6586-J

 

885

 

 

 

 

 

 

 

H6586-K

 

2,655

 

 

 

 

 

 

 

H6588-1

 

1,113

 

 

 

 

 

 

 

H6588-3

 

3,436

 

 

 

 

 

 

 

H6588-9

 

10,017

 

 

 

 

 

 

3-8

 

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 Maximum Number of Pairs, RAID Level Configuration of URz