Installing a DS14 disk shelf in an existing mixed shelf loop

Assumptions about the existing mixed shelf loop

This section is based on the assumption that the last disk shelf in the existing mixed shelf loop connected to your storage appliance is not a DS14 disk shelf.

Note
If the last disk shelf in your storage appliance system is a DS14, you can add the DS14 disk shelf to the loop without shutting down the system. Go to Hot-adding a DS14 to an existing loop.

Installing a DS14 disk shelf in an existing mixed shelf loop

To install a DS14 disk shelf into an existing mixed shelf loop on a storage appliance, complete the following steps.

Caution
If you are installing the DS14 into a loop that contains FC7, FC8, or FC9 disk shelves, the DS14 must be the last disk shelf in the loop and must have the highest disk shelf ID in the loop to avoid address conflicts.

Step	Action
1	Put on the antistatic wrist strap and grounding leash.
2	If the disk shelf connects to a...	Then...
	Filer	Shut down the filer by entering the following command at the console: halt Caution Always use the `halt` command to perform a clean shutdown.
	NetCache appliance	From the NetCache Manager home page, select Maintenance tab > System Control > Halt/Reboot. Select Halt NetCache.
3	Verify that the LCD display at the front of your storage appliance displays the following message: Halted
4	Turn off the power to your storage appliance and the disk shelves.
5	Install the DS14. Follow Step 2 through Step 6 of Installing a DS14.
6	Ground the disk shelf using the provided grounding cable. Follow Step 4 and Step 5 of Grounding connected disk shelves.
7	Connect the disk shelf to a power source. Follow Step 2 of Connecting the disk shelf to power.
8	If the last disk shelf in the loop to which you are adding the DS14 is...	Then...
	An FC7 or FC8 disk shelf	Remove the terminator from the Output/Terminator connector. Go to Step 9.
	An FC9 disk shelf	Go to Step 9.
9	Connect one end of the provided cable to the Output/Terminator connector of the LRC A on the last disk shelf in the loop.
10	Connect the other end of the cable to the LRC A Input on the DS14 disk shelf that you are adding. The following illustration shows a DS14 disk shelf installed above an FC9 disk shelf.
11	If the DS14 disk shelf...	Then...
	Is the only disk shelf in the loop	Connect one end of the provided cable to the LRC B Input on the DS14. Connect the other end of the cable to the LRC B Output on the DS14. Turn the terminate switches on LRCs A and B to the On position. Note Because LRC B on the DS14 disk shelf is inverted, the On terminate position on LRC B is up instead of down.
	Is the first of additional DS14 disk shelves being added to the loop	Turn the terminate switch on the first DS14 disk shelf in the mixed shelf loop to the Off position for LRC A (up) and LRC B (down). Connect one end of the provided cable to the LRC B Output on the first DS14 disk shelf in the mixed shelf loop. Connect the other end of the cable to the LRC B Input on the next DS14 disk shelf that you added to the mixed shelf loop.
		Verify that the terminate switch on all but the last DS14 disk shelf is in the Off position for LRC A (up) and LRC B (down). The terminate switch on the last DS14 disk shelf should be in the On position for LRC A(down) and LRC B (up).
12	Give the disk shelf a unique disk shelf ID. See Step 5 of Installing a DS14 for specific instructions. Note A valid shelf ID ranges between 1 through 7. Network Appliance recommends using disk shelf ID 7 only if it is the last ID available. A shelf ID that is not from 1 through 7 causes the drive addresses to default to those of a shelf with the ID switch set to 7 even though the Shelf ID indicator in the front operation panel will display a dash (-).
13	Turn on the power first to the disk shelves and then to the storage appliance.
14	Reboot the storage appliance.