System information

VNX™ System Operations42 of 114 Release 7.0
Block
The tasks to power down the VNX7500 storage system include stopping I/O, halting
the storage processors, and powering down the system by using the SPS power
switches.
6. If you are powering down the system completely, shutdown the storage array:
Note: This step involves safely shutting down the SPs to preserve the write cache and
can be skipped if only the blade(s) and Control Station are to be powered down
a. Stop all I/O activity and wait five minutes before continuing.
Note: All I/O activity flowing from the blades was stopped when the blades were
shutdown in step 4. If external hosts are attached to the storage array, stop all I/O
activity from these hosts.
b. Use the SPS power switches to power off the array. Turn off (0 position) the power
switch on the standby power supplies (SPSs). Make sure the SPS power indicators
are off before continuing.
c. Wait two minutes to allow the storage system to write its cache to disk and to power
off. Then, disconnect the power cables that run from the SPSs to the DAE.
d. If there are multiple DAEs present, disconnect the power cable from each DAE to the
PDU. This powers down the DAEs.
7. Disconnect the power cables for each blade and Control Station from the PDUs.
8. Make sure that the LEDs on all blade management switches are off. Once they are off,
the server is completely powered down.
Step Action
1. When possible, before you power down the VNX7500, notify all users of the powerdown.
2. Stop all I/O activity to the Storage Processors in the SPE.
If the server connected to the SPE is running the Linux or UNIX operating system, back
up critical data and then unmount the file systems.
Stopping I/O allows the SP to destage cache data, and may take some time. The length of
time depends on criteria such as the size of the cache, the amount of data in the cache,
the type of data in the cache, and the target location on the disks, but it is typically less
than one minute.
3. Wait 5 minutes.
Step Action
CIP-001115
SPS power
switch A
SPS power
switch B