Lenovo DM120S, Installation And Cabling Manual, Page: 19 / 70

If you are... Then...
Hot-adding a disk shelf to an end of a stack
that has multipath HA, multipath, quad-path
HA, or quad-path connectivity to the
controllers
a. Disconnect any cables from IOM A of the
disk shelf at the end of the stack that are
connected to any controllers; otherwise, go to
substep e.
Leave the other end of these cables connected
to the controllers, or replace cables with longer
cables if needed.
b. Cable the shelf-to-shelf connection(s)
between IOM A of the disk shelf at the end of
the stack and IOM A of the disk shelf you are
hot-adding.
c. Reconnect any cables that you removed in
substep a to the same port(s) on IOM A of the
disk shelf you are hot-adding; otherwise, go to
the next substep.
d. Verify that all cables are securely fastened.
e. Repeat substeps a through d for IOM B;
otherwise, go to Step 4.
Hot-adding a disk shelf to an end of the stack
in a DM3000x, DM5000x, or DM7000x single-
path HA or single-path configuration
These instructions are for hot-adding to the
end of the stack that does not have controller-
to-stack connections.
a. Cable the shelf-to-shelf connection between
IOM A of the disk shelf in the stack and IOM A
of the disk shelf you are hot-adding.
b. Verify that the cable is securely fastened.
c. Repeat applicable substeps for IOM B.
Step 4. Verify SAS connectivity for each hot-added disk shelf:
storage shelf show -shelf
shelf_name
-connectivity
You must run this command for each disk shelf you hot-added.
For example, the following output shows hot-added disk shelf 2.5 is connected to initiator ports 1a
and 0d (port pair 1a/0d) on each controller (in a multipath HA configuration with one quad-port SAS
HBA):
cluster1::> storage shelf show -shelf 2.5 -connectivity
Shelf Name: 2.5
Stack ID: 2
Shelf ID: 5
Shelf UID: 40:0a:09:70:02:2a:2b
Serial Number: 101033373
Module Type: IOM12
Model: DM240S
Shelf Vendor: Lenovo
Disk Count: 24
Connection Type: SAS
Shelf State: Online
Status: Normal
Chapter 2
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Hot-adding disk shelves with IOM12 modules
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