Disabling access to the shelf

You must disable access to the shelf before you replace the shelf modules.

1. Offline the affected plexes on the controller where they are hosted: aggr offline plex_name

   Example

   The example shows the commands for offlining plexes for a controller running cMode.

   
   Cluster_A_1::> storage aggregate plex offline -aggr aggr1 -plex plex2
   Cluster_A_1::> storage aggregate plex offline -aggr aggr2 -plex plex6
   Cluster_A_1::> storage aggregate plex offline -aggr aggr3 -plex plex1
   

2. Verify that the plexes are offline: aggr status -raggr_name

   Example

   The example shows the commands for verifying that the aggregates are offline for a controller running cMode.

   
   Cluster_A_1::> storage aggregate show -aggr aggr1
   Cluster_A_1::> storage aggregate show -aggr aggr2
   Cluster_A_1::> storage aggregate show -aggr aggr3
   

3. Disable the SAS ports or switch ports depending on whether the bridges connecting the target shelf are connecting a single SAS stack or two or more SAS stacks:
   • If the bridges are connecting a single SAS stack, disable the switch ports that the bridges are connected to using the appropriate command for your switch.

     The following example shows a pair of bridges that connect a single SAS stack, which contains the target shelf:

     
     
     
     
     

     Switch ports 8 and 9 on each switch connect the bridges to the network.

     The following example shows ports 8 and 9 being disabled on a Brocade switch.

     FC_switch_A_1:admin> portDisable 8
     FC_switch_A_1:admin> portDisable 9
     
     FC_switch_A_2:admin> portDisable 8
     FC_switch_A_2:admin> portDisable 9
     

     The following example shows port 8 and 9 being disabled on a Cisco switch.

     FC_switch_A_1# conf t
     FC_switch_A_1(config)# int fc1/8
     FC_switch_A_1(config)# shut
     FC_switch_A_1(config)# int fc1/9
     FC_switch_A_1(config)# shut
     FC_switch_A_1(config)# end
     
     FC_switch_A_2# conf t
     FC_switch_A_2(config)# int fc1/8
     FC_switch_A_2(config)# shut
     FC_switch_A_2(config)# int fc1/9
     FC_switch_A_2(config)# shut
     FC_switch_A_2(config)# end
     
   • If the bridges are connecting two or more SAS stacks, disable the SAS ports connecting the bridges to the target shelf: SASportDisable port number
     Note

     This is not applicable to FibreBridge 6500 bridges.

     The following example shows a pair of bridges that connect four SAS stacks. SAS stack 2 contains the target shelf:

     
     
     
     
     

     SAS port B connects the bridges to the target shelf. By disabling only SAS port B on both shelves, the other SAS stacks can continue to serve data during the replacement procedure.

     In this case, disable the SAS port connecting the bridge to the target shelf: SASportDisable port number

     The following example shows SAS port B being disabled from the bridge and also verifies that it is disabled. You must repeat the command on both bridges.

     Ready. *
     SASPortDisable B
     
     SAS Port B has been disabled.
     
     
4. If you previously disabled the switch ports, verify that they are disabled: switchShow

   Example

   The example shows that the switch ports are disabled on a Brocade switch.

   
   FC_switch_A_1:admin> switchShow
   FC_switch_A_2:admin> switchShow
      
   

   Example

   The example shows that the switch ports are disabled on a Cisco switch.

   
   FC_switch_A_1# show interface fc1/6
   FC_switch_A_2# show interface fc1/6
   

5. Wait for ONTAP to realize that the disk is missing.
6. Power off the shelf that you want to replace.