Hot-removing a drive shelf

You can hot-remove an NS224 drive shelf: physically remove a shelf that has had the aggregates removed from the drives, in an HA pair that is up and serving data (I/O is in progress).

Before you begin

About this task

Steps

  1. Verify that the drives in the shelf you are removing have no aggregates (are spares) and that ownership is removed:
    1. Enter the following command on either controller module: storage disk show -shelf shelf_number
    2. Check the output to verify that there are no aggregates on the drives in the shelf you are removing.
      Drives with no aggregates have a dash in the Container Name column.
    3. Check the output to verify that ownership is removed from the drives on the shelf you are removing.
      Drives with no ownership have a dash in the Owner column.
      Note: If you have failed drives in the shelf you are removing, they display broken in the Container Type column. (Failed drives do not have ownership.)
    Example
    The following output shows drives on the shelf being removed, shelf 2, are in a correct state for removing the shelf. The aggregates are removed on all of the drives; therefore, a dash appears in the "Container Name" column for each drive. Ownership is also removed on all of the drives; therefore, a dash appears in the "Owner" column for each drive.
    cluster1::> storage disk show -shelf 2
    
               Usable           Disk     Container   Container
    Disk         Size Shelf Bay Type     Type        Name       Owner
    -------- -------- ----- --- ------   ----------- ---------- ---------
    ...
    2.2.4           -     2   4 SSD-NVM  spare                -         -
    2.2.5           -     2   5 SSD-NVM  spare                -         -
    2.2.6           -     2   6 SSD-NVM  broken               -         -
    2.2.7           -     2   7 SSD-NVM  spare                -         -
    ...
  2. Properly ground yourself.
  3. Physically locate the shelf you are removing.
  4. Disconnect the cabling from the shelf you are removing:
    1. Disconnect the power cord from the power supply by opening the power cord retainer, and then unplug the power cord from the power supply.
      Power supplies do not have a power switch.
    2. Disconnect the storage cabling from the NSM module ports.
  5. Physically remove the shelf from the rack or cabinet.
    Attention: A fully loaded NS224 shelf can weigh up to 66.78 lbs (30.29 kg) and requires two people to lift or use of a hydraulic lift. Avoid removing shelf component (from the front or rear of the shelf), to reduce the shelf weight, because shelf weight will become unbalanced.
    Note: If your system was shipped in a cabinet, you must first unscrew the two Phillips-head screws securing the shelf to the rear uprights. The screws are located on the inside shelf walls of the bottom NSM module. You should remove both NSM modules to access the screws.
  6. If you disabled drive ownership automatic assignment when you removed ownership from the drives, reenable it: storage disk option modify -autoassign on
    You run the command on both controller modules in the HA pair.
  7. If you removed the shelf from controller module ports e0b and e0e, you have the option of configuring these ports for data use by completing the following substeps; otherwise, you are done.
    1. Configure the e0b and e0e ports on one of the controller modules for data use: storage port disable -node node name -port e0bstorage port disable -node node name -port e0e
    2. Reboot the controller module so that the port changes take effect: system node reboot -node node name -reason reason for the reboot
    3. After the controller module has completed its reboot, repeat substep 7.a and 7.b for the second controller module.
      The reboot can take up to 15 minutes.
    4. Verify that the e0b and e0e ports on both controller modules are in the disabled state : storage port show
      You can enter the command on either controller module.
      Example
      The following output shows the state of all ports on both controller modules. Ports e0b and e0e are in the disabled state.
      cluster1::> storage port show
      
                                    Speed                            VLAN Is
      Node               Port Type  (Gb/s) State           Status      ID Dedicated?
      ------------------ ---- ----- ------ --------------- --------- ---- ----------
      node1
                         e0b  ENET     100 disabled        offline    30   false
                         e0c  ENET     100 enabled         online     30   true
                         e0e  ENET     100 disabled        offline    30   false
                         e0f  ENET     100 enabled         online     30   true
      node2
                         e0b  ENET     100 disabled        offline    30   false
                         e0c  ENET     100 enabled         online     30   true
                         e0e  ENET     100 disabled        offline    30   false
                         e0f  ENET     100 enabled         online     30   true