Hot-upgrading or hot-downgrading a disk shelf

When you can hot-upgrade or hot- downgrade

You can hot-upgrade a disk shelf with an LRC into a disk shelf with an ESH/ESH2 or hot-downgrade the disk shelf with an ESH/ESH2 into a disk shelf with an LRC, if your system incorporates redundancy through multipathing.

Caution
You must hot-upgrade or hot-downgrade all disk shelves in the loop.

Requirements for hot-upgrading or hot-downgrading

To hot-upgrade or hot-downgrade a disk shelf, the following requirements must be met.

Disk shelf loop speed	Hot-upgrade	Hot-downgrade
DS14 (only available at 1-Gb loop speed)	LRC to ESH/ESH2 hot-upgrade is supported.	ESH/ESH2 to LRC hot-downgrade is supported.
DS14mk2 FC set at 1-Gb loop speed	LRC to ESH/ESH2 hot-upgrade is supported.	ESH/ESH2 to LRC hot-downgrade is supported.
DS14mk2 FC set at 2-Gb loop speed	Upgrades from LRC are not applicable. ESH to ESH2 is supported. See Hot-swapping a module.	Downgrades to LRC are not applicable. ESH2 to ESH hot-downgrade is supported.

Hot-upgrading or hot-downgrading a disk shelf

To hot-upgrade or hot-downgrade a disk shelf, complete the following steps.

Note
To hot-upgrade or hot-downgrade a disk shelf in a cluster, see the cluster guide for your storage appliance.

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 Loop A: storage disable adapter adaptername
4	If you are...	Then...
	Hot-upgrading the disk shelf	Note the position of the terminate switch on the LRC you are removing and set the terminate switch on the ESH to the same setting before inserting it into the disk shelf. Note ESH2 is self-terminating and does not have a terminate switch.
	Hot-downgrading the disk shelf
	From an ESH to an LRC	Note the position of the terminate switch on the ESH you are removing and set the terminate switch on the LRC to the same setting before inserting it into the disk shelf.
	From an ESH2 to an ESH/LRC	Place the terminate switch on all but the last disk shelf in the loop to the Off position. For module A it is in the up position and for module B it is in the down position. Place the terminate switch on the last disk shelf in the loop to the On position. For module A it is in the down position and for module B it is in the up position.
5	Disconnect the LRC/ESH/ESH2 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 LRC/ESH/ESH2 to release it and pull it out of the disk shelf.
7	Wait for the following console message: Module x is not installed
8	Slide the module into the slot at the rear of the disk shelf and push the levers of the CAM mechanism into place. Caution Do not use excessive force when sliding the module into the disk shelf; you might damage the connector.
9	If you are...	Then...
	Hot-upgrading a disk shelf
	From an LRC to an ESH	Reconnect the Fibre Channel cabling by using LC-to-LC cables when connecting to optical FC-AL adapters, and with HSSDC2-to-HSSDC2 cables for connections between shelves.
	From an LRC to an ESH2	Reconnect the Fibre Channel cabling by plugging an optical SFP into the ESH2 Input port, using an LC-to-LC cable when connecting to optical FC-AL adapters, and using SFP-to-SFP cables for connections between shelves.
	Hot-downgrading a disk shelf
	From an ESH2/ESH to an LRC	Reconnect the Fibre Channel cabling by using HSSDC to DB-9 cables when connecting to copper FC-AL adapters or SC-to-LC cables when connecting to optical FC-AL adapters, and using DB-9 to DB-9 cables for connections between shelves.
	From an ESH2 to an ESH	Reconnect the Fibre Channel cabling by using LC-to-LC cables when connecting to optical FC-AL adapters, and using HSSDC2-to-HSSDC2 cables for connections between shelves.
10	Repeat Step 3 through Step 9 for the remaining LRC/ESH/ESH2 modules in the loop.
11	From the console of the storage appliance, enter the following command to verify that the LRC/ESH/ESH2 modules in Loop A report good status: environ shelf As long as only the modules in loop A are upgraded, you also receive the following error message: Element 1: component is from a different product family. This is an unsupported configuration.
12	From the console of the filer, enter the following command to enable the Loop A: storage enable adapter adaptername
13	Repeat Step 3 through Step 12 for Loop B.