Connecting an R200 disk shelf

About connecting disk shelves to the storage engine

The following section describes how to cable the disk shelves to the storage engine. They are connected to the storage engine in pairs, one for each loop. Disk shelf numbering begins at the storage engine with disk shelf one and progresses outward to the maximum number of disk shelves for each loop.

Disk shelf cabling requirements

The following table lists the cabling requirements for the disk shelves.

Type of device	Cabling requirements
AT-FC	Uses LC to LC cables to connect to optical FC-AL adapters. Uses HSSDC2-to-HSSDC2 cables for connections between disk shelves with AT-FC. Uses HSSDC2-to-SFP cables for connections between a disk shelf with AT-FC and a disk shelf with AT-FC2.
AT-FC2	Requires an optical SFP in the input port and an LC to LC cable to connect to optical FC-AL adapters. Uses SFP-to-SFP cables for connections between disk shelves with AT-FC2. Uses HSSDC2-to-SFP cables for connections between a disk shelf with AT-FC2 and a disk shelf with AT-FC.

Sequence of disk shelf connections

Connect the disk shelves to the storage engine in the sequence shown in the following figure.

Connecting the disk shelves to the storage engine

To connect the disk shelves to the storage engine, complete the following steps, using the figure for reference.

Step	Action
1	Verify that your NetApp appliance meets the minimum software requirements to support the disk shelf and module combination. See the System Configuration Guide at http://now.netapp.com for more information.
2	Put on the antistatic wrist strap and grounding leash.
3	Make sure that the storage engine and disk shelves are turned off.
4	If the disk shelf has...	Then...
	An AT-FC module	Connect one end of the LC/LC optical cable to one of the ports on the Fibre Channel adapter. Connect the other end to the Input port of the first disk shelf of the loop.
	An AT-FC2 module	Connect one end of the LC/LC optical cable to one of the ports on the Fibre Channel adapter. Connect the other end to the optical SFP in the Input port of the first disk shelf of the loop.
5	Repeat Step 4 for the remaining port on the Fibre Channel adapter.
6	If your system has more than two disk shelf loops, repeat Step 4 and Step 5 for each additional pair of disk shelf loops.
7	If the disk shelf has...	Then...
	An AT-FC module	Connect one end of the HSSDC2 shelf-to-shelf cable to the Output port of the first disk shelf in the loop. Connect the other end to the Input port of the next disk shelf in the loop.
	An AT-FC2 module	Connect one end of the SFP- to-SFP patch cables to the Output port of the first disk shelf in the loop. Connect the other end to the Input port of the next disk shelf in the loop.
8	Repeat Step 7 until all disk shelves in the loops are cabled.
9	Set the Terminate switches to OFF on all but the last disk shelf in each loop. Set the Terminate switch to ON on the last disk shelf in each loop.
10	Set the disk shelf ID, from 1 to 6, for each disk shelf in both loops.