HP StoreAll Storage - Manual (Page 7)

1 Overview
The HP StorageWorks X9720 Network Storage System controller includes the following hardware
and firmware features:
• 2U rack profile
• 3.5 inch, 1TB dual-ported Midline SAS hard drives
• SAS host interface
• Redundant hot-pluggable components:
• Controllers, each with one 512MB cache module and two batteries
• Fans
• Power supplies
• Active/Active firmware with transparent LUN failover
• Online firmware update capability
X9720 Network Storage System Controller User Guide 7