Hot-swapping a module

Assumptions about this procedure

The assumptions about this procedure are that LRC/ESH/ESH2 modules on the disk shelf are multipath connections to the storage appliance and that you are hot-swapping an LRC with another LRC, an ESH with another ESH, an ESH2 with another ESH2, or that you are hot-swapping an ESH with an ESH2.

Note
A hot-swap of an ESH with an ESH2 requires that you upgrade to Data ONTAP 6.4.4 or later and replace both ESH modules in the disk shelf. A hot-swap of an ESH with an ESH2 is not supported with NetCache appliances.

If you are hot-upgrading or hot-downgrading these devices, see Hot-upgrading or hot-downgrading a disk shelf.

Caution
If you attempt to hot-swap the LRC/ESH/ESH2 on a disk shelf that does not have multipath connections, you lose all access to the drives on this disk shelf as well as those below it.

Hot-swapping a module

To hot-swap a module, complete the following steps.

Note
To hot-swap a module on a disk shelf in a cluster, see the cluster guide for your filer.

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	From the console of the storage appliance, enter the following command to disable the loop in which the failed module is a connection: storage disable adapter adaptername The Data ONTAP System Administrator's Guide (6.1 or later) provides more information about these commands.
4	If you are hot-swapping...	Then...
	An LRC or ESH with like modules	Note the position of the terminate switch on the LRC/ESH you are removing and set the terminate switch on the replacement LRC/ESH to the same setting before inserting it into the disk shelf.
	An ESH with an ESH2 for a disk shelf that is:
	Either the first shelf in the loop or a shelf in the middle of the loop where all other disk shelves have ESHs	Place the terminate switch on all but the last disk shelf in the loop to the Off position. For ESH A it is in the up position and for ESH B it is in the down position. Place the terminate switch on the last disk shelf in the loop to the On position. For ESH A it is in the down position and for ESH B it is in the up position. Note ESH2 is self-terminating and does not have a terminate switch.
	Last shelf in the loop where all other disk shelves have ESHs	On all the disk shelves in the loop, place the terminate switch to the Off position. For ESH A it is in the down position and for ESH B it is in the up position.
	An ESH2 with an ESH2	Go to Step 5.
5	If you are hot-swapping...	Then...
	An LRC/ESH/ESH2 with like modules	Disconnect the module that you are removing from the Fibre Channel cabling.
	An ESH with an ESH2	Disconnect the ESH from the Fibre Channel cabling and remove the cabling.
6	Using the thumb and index finger of both hands, press the levers on the CAM mechanism on the module to release it and pull it out of the disk shelf.
7	Slide the module into the slot at the rear of the disk shelf and push the levers of the CAM into place. Caution Do not use excessive force when sliding the LRC/ESH/ESH2 into the disk shelf; you might damage the connector.
8	If you are hot-swapping...	Then...
8	An LRC/ESH/ESH2 with like modules	Reconnect the Fibre Channel cabling.
	An ESH with an ESH2:
	If it is the first shelf in the loop where all other disk shelves have ESHs	Plug the optical SFP into the input port on ESH2. Reconnect the Fibre Channel cabling by using LC-to-LC cables when connecting to optical FC-AL adapters. Use HSSDC2-to-SFP cables for connections between the disk shelf with ESH2 and the disk shelf with ESH.

	If it is the last shelf in the loop where all other disk shelves have ESHs If it is a shelf in the middle of the loop where all other disk shelves have ESHs	Use HSSDC2-to-SFP cables for connections between a disk shelf with ESH and a disk shelf with ESH2. Note Each ESH2 ships with one SFP-to-SFP cable and one HSSDC2-to-SFP cable. If the replacements are in the middle of the loop, you require two additional HSSDC2-to-SFP cables.

9	From the console of the filer, enter the following command to enable the loop in which the replacement LRC/ESH/ESH2 is a connection: storage enable adapter adaptername
10	Repeat Step 3 through Step 9 for Loop B.