HP StorageWorks XP Remote Web Console Software - Manual (Page 17)

2 Overview of Hitachi
ShadowImage™ for z/OS
Operations
Siz is a storage-based hardware solution for duplicating logical volumes which reduces backup time
and provides point-in-time backup. The Siz source volumes (S-VOLs) contain the original data, and the
Siz target volume(s) (T-VOLs) contain the duplicate data. You can make up to three copies of each
S-VOL. Since each T-VOL is paired with its S-VOL independently, you can maintain each T-VOL as an
independent copy set that can be split, re-synchronized, and deleted separately from the other T-VOLs
assigned to the same S-VOL.
This chapter covers the following topics:
• Siz Components (section ShadowImage for z/OS Components , page 17)
• Requirements for Using and Maintaining Siz (section
Requirements for Using and Maintaining ShadowImage for z/OS , page 21)
• Siz Operations (section ShadowImage for z/OS Operations , page 25)
• Siz Options (section ShadowImage for z/OS Operations , page 25)
• At-Time Split Function (section At-Time Split Function , page 40)
• Siz Pair Status (section Hitachi ShadowImage for z/OS Pair Status , page 42)
• Cautions on Switching Off Power Supply (section Cautions on Switching Off Power Supply , page 46)
• Cautions on Using XP10000 storage system (section
“ Cautions on Using XP10000 Storage System ” on page 47)
Hitachi ShadowImage™ for z/OS Components
Siz operations involve the S-VOLs and T-VOLs in the storage system, the Siz software hosted by Remote
Web Console, and (optionally) the PPRC host software functions.
The Siz system components are:
• Siz volume pairs (S-VOLs and T-VOLs) (see section Volume Pairs (S-VOLs and T-VOLs) , page 18.
• Siz software on Remote Web Console (section ShadowImage for z/OS Software , page 19).
• Siz License (section Purchasing Volumes for Use with ShadowImage for z/OS , page 19).
• (Optional) PPRC host software (section IBM PPRC Host Software Functions , page 21).
• (Optional) HP StorageWorks for Business Continuity Manager software (see section
“ Hitachi Business Continuity Manager ” on page 14.
Hitachi ShadowImage for z/OS user guide 17