Lenovo ThinkSystem DE2000H 7Y71 - Page 78


Possible data loss — If you continue this procedure while I/O operations are
occurring, the host application might lose data because the storage array will
not be accessible.
6.
Wait for any data in cache memory to be written to the drives.
The green Cache Active LED on the back of each controller is on when cached data needs to
be written to the drives. You must wait for this LED to turn off.
(1) Cache Active LED
7.
From the Home page of ThinkSystem System Manager, select View Operations in Progress.
8.
Wait for all operations to complete before continuing with the next step.
9.
Power off the shelves as follows:
◦ If you are replacing a drawer in a shelf with Drawer Loss Protection:
There is NO need to power off any of the shelves.
You can perform the replace procedure while the drive drawer is online, because the
Set
Drawer Service Action Allowed Indicator CLI command completed successfully.
◦ If you are replacing a drawer in a controller shelf without Drawer Loss Protection:
a.
Turn off both power switches on the controller shelf.
b.
Wait for all LEDs on the controller shelf to go dark.
◦ If you are replacing a drawer in an expansion drive shelf without Drawer Loss Protection:
a.
Turn off both power switches on the controller shelf.
b.
Wait for all LEDs on the controller shelf to go dark.
c.
Turn off both power switches on the drive shelf.
d.
Wait two minutes for drive activity to stop.
5.4.2. Step 2: Remove cable chains
Remove both cable chains so you can remove and replace a failed drive drawer. The left and right
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