HP 70 Modular Smart Array - Manual (Page 10)

7-segment display
The 7-segment display shows the box ID number assigned to the enclosure based on how it is connected
to the controller. If there are multiple enclosures attached to the controller, the box ID number identifies
the order in which they are attached.
NOTE:
Depending on your environment, you can also view device information through management software
utilities, such as the HP System Management Home page, HP Systems Insight Manager (HP SIM),
Storage Management Utility (SMU), or Command Line Interface (CLI).
Hardware features and LED descriptions 10