HP StorageWorks XP Remote Web Console Software - Manual (Page 39)

4 Preparing for ShadowImage for Mainframe Operations
This chapter describes requirements for using and maintaining ShadowImage for Mainframe,
including how to calculate the number of pairs that ShadowImage for Mainframe can create and
how to install and start ShadowImage for Mainframe. Read this chapter before you start using
ShadowImage for Mainframe.
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System Requirements
SIz operations involve the XP storage system containing the S-VOLs and T-VOLs, the licensed
ShadowImage for Mainframe feature enabled on the Remote Web Console computer. The SIz
system requirements are as follows.
Volume Requirements
The requirements for the volumes to be used as SIz pairs are as follows:
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RAID level
The RAID level combinations of the S-VOL and the T-VOL of an SIz pair must be one of the
following.
Table 13 Supported Combinations of RAID Levels
T-VOL S-VOL
RAID1 RAID1
RAID5 RAID1
RAID6 RAID1
RAID1 RAID5
RAID5 RAID5
RAID6 RAID5
RAID1 RAID6
RAID5 RAID6
RAID6 RAID6
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Types of volumes
Besides normal volumes, you can use external volumes and custom-sized volumes. When using
external volumes or custom-sized volumes note the following points:
◦ External volumes
The license for XP External Storage is required.
◦ Custom-sized volumes
The license of Virtual LVI is required. To create an SIz pair with custom-sized volumes,
S-VOL must be paired with T-VOLs of the same capacity and the same emulation type.
System Requirements 39