Disk Enclosures; Disk Enclosure Components; When Replacing Drawer Assembly And Power Block Assembly; Powering On The Disk Enclosure - HP StoreOnce 4900 Service And Maintenance Manual

8 Disk enclosures

Disk enclosure components

The standard D6000 Disk Enclosure documentation supplied with field replacement parts for the
disk enclosures provides all the required details, with the following important exception.
The following parts are not hot-pluggable. The system must be taken offline before replacing
them.
I/O module (controller board)
SAS cable from RAID controller card to the disk enclosures
Drawer
Power block
Drawer (663680-001) and Power Block (689128-001) parts must not be replaced at the
same time.
NOTE: Before replacing any I/O modules or SAS cables thoroughly check that all cables are
fully seated and connected.
IMPORTANT:
activity and HPE recommends that the service set is stopped before proceeding. If the service
set is not stopped, always replace one cable at a time. After replacing the first SAS cable, verify
in the StoreOnce GUI that all SAS devices show healthy redundant paths, before replacing the
other SAS cable.

When replacing Drawer Assembly and Power Block Assembly

Drawer (663680-001) and Power Block (689128-001) components must not be replaced at the
same time.
If multiple components require replacing:
1. Ensure that the storage filesystem has safely been shutdown. Use the StoreOnce GUI
(Device Configuration—Maintenance—Shutdown) or the StoreOnce CLI (the system
shutdown command).
2. Power off the disk enclosure before removing (non hotplug) cables/ components.
3. Replace the first item.
4. Power on the disk enclosure and wait at least 5 minutes to allow the D6000 unique ID
information to be copied onto the replacement part.
5. Power down the disk enclosure and replace the second item.

Powering on the disk enclosure

There is a single power on/off button for the disk enclosure on the rear of the unit. You may need
to hold down the power on button (1) on the rear of each unit for up to 30 seconds. Look at the
LEDs on the I/O modules and wait until the Green Status LED (3) remains on, and the Locate
LED (2) and the Fault LED (4) are both off.
26 Disk enclosures
Any activity that requires SAS cables to be removed is classed as a maintenance