Powering Off The System And Shutting Down The Infrastructure; Powering Off - IBM Storwize V5010 Manual

Note: If the cluster is active and you connect to the configuration node, this URL opens
the management GUI. If you want to access the SAT in this case, browse to
http://192.168.0.1/service.
5. Complete the correct procedure to service the canister.
6. Log out of the Service Assistant Tool and disconnect the Ethernet cable from the
technician port.
On the Storwize V5010 system or Storwize V5020 system
7.
running the command that is shown in Example 12-3.
Example 12-3 Disabling the technician port
>satask chserviceip -techport disable
SAS port 2 can then be used again to provide extra Ethernet connectivity for system
management, iSCSI, and IP replication.
12.10 Powering off the system and shutting down the
infrastructure
The following sections describe the process to power off the system and to shut down and
start an entire infrastructure that contains an IBM Storwize V5000 Gen2.

12.10.1 Powering off

Important: Never power off your IBM Storwize V5000 Gen2 system by powering off the
power supply units (PSUs), removing both PSUs, or removing both power cables from a
running system. It can lead to inconsistency or loss of the data that is staged in the cache.
You can power off a node canister or the entire system. When you power off only one node
canister for each I/O group, all of the running tasks remain active while the remaining node
takes over.
Powering off the system is typically planned in site maintenance (power outage, building
construction, and so on) because all components of the IBM Storwize V5000 Gen2 are
redundant and replaceable while the system is running.
Important: If you are powering off the entire system, you lose access to all volumes that
are provided by this system. Powering off the system also powers off all IBM Storwize
V5000 Gen2 nodes. All data is flushed to disk before the power is removed.
Before you power off the system, stop all hosts with volumes that are allocated to this system.
This step can be skipped for hosts with volumes that are provisioned with mirroring
(host-based mirror) from different storage systems. However, skipping this step means that
errors that relate to lost storage paths and disks can be logged on the host error log.
Note: If a canister or the system is powered off, a local visit can be required to either reseat
the canister or power cycle the enclosures.
, disable the technician port by
Chapter 12. RAS, monitoring, and troubleshooting
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