Hitachi Universal Storage Platform VM Computer Drive User Manual


 
Architecture and Components 2-5
Hitachi Universal Storage Platform V/VM User and Reference Guide
Hardware Components
The USP V/VM hardware includes the controller, disk unit, and power supply
components. Each component is connected over the cache paths, shared
memory paths, and/or disk paths. The USP V/VM controller is fully redundant
and has no active single point of failure. All components can be repaired or
replaced without interrupting access to user data.
The main hardware components of the USP V and VM storage systems are:
Shared Memory
Cache Memory
Host Channels and Front-End Directors
Back-End Directors and Array Domains
Hard Disk Drives
Service Processor
Power Supplies
Batteries