To service a Lenovo Storage V7000 Gen2 control enclosure, you must safely power off both of the
node canisters in the enclosure.
Host connectivity for hosts that are connected to the control
enclosure is lost when the control enclosure is shut down. You must
quiesce I/O activity of these hosts before doing this procedure.
If your system has a single control enclosure, complete
the steps in Procedure: Powering off your system instead of following
this procedure. Doing so provides a more coordinated shutdown of the
whole system.
Attention:
- If your system is powered on and doing I/O operations, you must
power off the control enclosures correctly to ensure that no data
is lost. If possible, always use the fix procedures that are presented
by the management GUI to manage and maintain your system. The fix
procedures ensure that node canisters are powered off safely.
- If the system includes two control enclosures, some volumes might
become inaccessible when a control enclosure shuts down. Refer to Procedure: Understanding Lenovo Storage V7000 Gen2 volume dependencies to determine whether it is appropriate to continue this
procedure.
- If you need to power off the node canister that is operating as
the configuration node, power down the other node canister first and
then power down the configuration node second when following this
procedure. This prevents two failovers from happening, reducing delays
in powering off the control enclosure.
To power off a control enclosure, complete the following
steps:
- Use the management GUI to determine which two node canisters are in the control
enclosure that is to be powered off.
Note whether one of the two nodes is the configuration node
so that you can power it off second.
- Go to the service assistant
for the first node to be powered off.
- On the home page, select the node canister to be powered
off.
- Use the Power off action to power
off the canister.
- Wait for the node to appear
offline.
- Repeat steps 2 through 5 on
the second node canister in the enclosure that is to be powered off.
- If another control enclosure in the system is online, the management GUI can be used to confirm that the node status of both nodes
is offline.
- Turn off the power to the enclosure and disconnect both
power cables from the enclosure.
After powering off a control enclosure using
this procedure, you must reconnect the power cables and turn the power
on. The node canisters will start.