Hitachi Virtual Storage Platform G1000 Hardware Manual page 179

controller box
The enclosure that contains the storage system controller. For some
models, disk drives may be included as well. Controller boxes come in 2U
and 3U versions.
• CBL: AC-powered 3U controller box.
• CBLE: AC-powered 2U controller box with support for encryption.
• CBLD: DC-powered 3U controller box.
• CBLE: 3U controller box that supports encryption.
• CBSL controller box: A 3U controller box that can contain a
• CBSS controller box: A 2U controller box that can contain a
• CBXSL controller box: A 3U controller box that can contain a
• CBXSS controller box: A 2U controller box that can contain a
CRC
See cyclic redundancy check.
cyclic redundancy check (CRC)
An error-correcting code designed to detect accidental changes to raw
computer data.
D
differential management-logical unit
disaster recovery
A set of procedures to recover critical application data and processing
after a disaster or other failure. Disaster recovery processes include
fallover and fallback procedures.
DMLU
See differential management-logical unit.
drive box
Chassis for mounting drives that connect to the controller box.
• Drive boxes with AC power supply:
Hitachi Virtual Storage Platform G1000, G1500, and Virtual Storage Platform F1500 Hardware Guide
maximum of 12 3.5-inch drives.
maximum of 24 2.5-inch drives.
maximum of 12 3.5-inch drives.
maximum of 24 2.-5 inch drives.
○ DBS, DBL, DBF: Drive box (2U)
○ DBX: Drive box (4U)
○ DBW: Drive box (5U)
Glossary 179