3. Physically locate the disk shelves you are removing.
If needed, you can turn on the disk shelf's location (blue) LEDs to aid in physically locating the
affected disk shelf:
storage shelf location-led modify -node node_name -shelf-name shelf_name
-led-status on
Note:
A disk shelf has three location (blue) LEDs: one on the operator display panel and one
on each IOM12 module. Location LEDs remain illuminated for 30 minutes. You can turn them
off by entering the same command, but using the
off
option.
4. If you are removing an entire stack of disk shelves, complete the following substeps; otherwise,
go to the next step:
a. Remove all SAS cables on path A (IOM A) and path B (IOM B).
This includes controller-to-shelf cables and shelf-to-shelf cables for all disk shelves in the
stack you are removing.
b. Go to step
9
on page 44.
5. If you are removing one or more disk shelves from a stack (but keeping the stack), recable the
path A (IOM A) stack connections to bypass the disk shelves you are removing by completing the
applicable set of substeps:
If you are removing more than one disk shelf in the stack, complete the applicable set of substeps
one disk shelf at a time.
Note:
Wait at least 10 seconds before connecting the port. The SAS cable connectors are
keyed; when oriented correctly into a SAS port, the connector clicks into place and the disk
shelf SAS port LNK LED illuminates green. For disk shelves, you insert a SAS cable
connector with the pull tab oriented down (on the underside of the connector).
If you are removing...
Then...
A disk shelf from either end
(logical first or last disk shelf)
of a stack
a. Remove any shelf-to-shelf cabling from IOM A ports on the disk
shelf you are removing and put them aside.
b. Unplug any controller-to-stack cabling connected to IOM A ports on
the disk shelf you are removing and plug them into the same IOM A
ports on the next disk shelf in the stack.
The “next” disk shelf can be above or below the disk shelf you are
removing depending on which end of the stack you are removing the
disk shelf from.
A disk shelf from the middle
of the stack
A disk shelf in the middle of
a stack is only connected to
other disk shelves—not to
any controllers.
a. Remove any shelf-to-shelf cabling from IOM A ports 1 and 2 or from
ports 3 and 4 on the disk shelf you are removing and IOM A of the
next disk shelf, and then put them aside.
b. Unplug the remaining shelf-to-shelf cabling connected to IOM A
ports on the disk shelf you are removing and plug them into the same
IOM A ports on the next disk shelf in the stack.
The “next” disk shelf can be above or below the disk shelf you are
removing depending on which IOM A ports (1 and 2 or 3 and 4) you
removed the cabling from.
Example
You can refer to the following cabling examples when removing a disk shelf from an end of a
stack or the middle of a stack. Note the following about the cabling examples:
42 | Service Guide for DS460C, DS224C and DS212C Disk Shelves
Summary of Contents for DS224C
Page 2: ......
