HP StorageWorks Scalable File Share - Manual (Page 208)

Replacing, adding, and removing hardware, and upgrading firmware 8–10
• When a controller module is replaced in an SFS20 array, the battery in the array starts to recharge,
and this can take some time (on average, about two hours, but possibly up to six and a half hours).
During this time, the array works in an extremely degraded mode.
Process
1. Back up any file system that uses the LUNs on the array where you are replacing the controller module
(see Section 6.4 for information on backing up file system data).
2. Stop any file systems that use the LUNs on the array.
3. Shut down the servers attached to the array.
4. Turn off the power to the array enclosure.
5. Replace the controller module, as follows:
a.
Disconnect the VHDCI cable.
b. Squeeze the release lever and the finger hook together while pulling the controller module out of
the enclosure.
c. Transfer the cache and batteries from the degraded controller module to the replacement
controller module.
d. Insert the replacement controller module into the enclosure until it is firmly seated in the
enclosure.
e. Connect the VHDCI cable to the connector on the new controller module.
CAUTION: To prevent damage to the cable connector, do not use excessive force when
tightening the thumbscrews on the connector.
f. Confirm that the status LED on the replacement module is illuminated green.
6. Turn on the power to the SFS20 array enclosure.
7. Turn on the power to (or boot) one of the servers attached to the array.
8. Use the
show array
command to determine whether the firmware version on the new controller is
as specified in HP StorageWorks Scalable File Share Release Notes. If necessary, upgrade the
firmware version as described in Section 8.2.2.
9. When the server is running normally, turn on the power to the other server attached to the array.
8.1.12 Replacing an SFS20 battery pack and cache
When a battery is replaced in an SFS20 array, the battery starts to recharge. This can take some time (on
average, about two hours, but possibly up to six and a half hours). During this time, the array works in an
extremely degraded mode.
TIP: In the output from the show
array array_number
command (and in email alerts), the batteries are
referred to as
BATTERY1
and
BATTERY2
. In the HP StorageWorks Modular Smart Array 20 User Guide,
the batteries are referred to as the lower cache battery and the upper cache battery. Note the following:
•
BATTERY1
is the lower cache battery. It is mounted on the controller cache module.
•
BATTERY2
is the upper cache battery. It sits on the plastic tray on top of the controller and is
connected to the corner of the controller printed circuit board by a 2-core cable.