Complete this task to power on a storage unit.
Before powering on a storage unit, ensure that the management console
has been installed.
Perform the following steps to turn on the power for the initial
startup of the storage unit:
- Verify that all communication, interenclosure connections, and
power cables are plugged into the back of the enclosures and into properly
grounded ac electrical outlets.
- Verify that all disk drive modules are locked securely in place.
Note: Ensure that at least four disk drive modules are present before
you start the storage unit.
- Check the system documentation for the external hardware devices
that you intend to power on, and then determine the proper startup sequence.
Use the following power-on sequence, where it is applicable:
- Turn on the power to the supporting devices (for example, Ethernet
switches and management stations) before turning on the server enclosure.
- Turn on the server enclosure by pressing the power
button that is located on the left side of the rear operator panel.
Notes: - The unit powers on the server enclosure and then automatically
powers on the attached expansion enclosures in the necessary sequence. After
the server enclosure has completely powered on, the power-on sequence continues
down the line of attached expansion enclosures. Each expansion enclosure powers
on the enclosed resources in the necessary order before the power-on sequence
continues to the next attached expansion enclosure. Enclosures on loop 1 might
power on after the enclosures that are connected to loop 0, and they can take
several minutes to power on.
- If you are powering on a new enclosure or if the enclosure has been powered
down long enough for the battery backup unit (BBU) to lose its charge, the
BBU must build at least a 50% charge before the storage unit is fully functional.
This can take up to two and one-half hours. The storage unit might not be
able to communicate with the DS Storage Manager and
host systems until the BBUs have accumulated a sufficient charge.
- After powering on the enclosure, the information indicator flashes to
indicate that the system is initializing and is not yet ready to be accessed
by either the management console or host systems. Once the flashing
amber light turns off, initialization is complete and the system is ready
for I/O.
CAUTION:
Upon power on, a discovery process is
initiated to detect all hardware. This process can take an extensive amount
of time, depending on the number and type of attachments. You must wait until
this process is complete before initiating any other processes.