Powering Off; Figure 22: Power Off Sequence - Accusys ExaSAN A08S3-PS User Manual

3. Installation

3.2.2 Powering Off

If you need to power off the entire system, such as in the cases of switch or RAID system
firmware updates, adding a RAID system or client computer, power off in the reverse order of
Powering On. Before turning off the A08S3-PS Storage System, turn off the host server first.
During RAID initiation or disk drive rebuilding, you can turn off the host server and leave the
A08S3-PS powered on.

Figure 22: power off sequence

User Guide Page 3-7