Description:
Procedure to replace a faulty disk on EMSA.

Procedure to replace a faulty disk on EMSA.

Even though you can hot-swap a faulty disk, a system restart is required for the recognition and creation of zpool on the new disk. Plan to perform this activity during non-business hours. Hard disks can be accessed from the back panel of the appliance on the top right corner. The top disk will be on port #4 and the bottom disk is on port #3. The port numbers will be displayed in the Error message on the boot screen.

Port 4 : HGST HTS541010A9E680
S.M.A.R.T Status Bad, Backup and Replace.

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1). Login to CLI of both FT appliances.
2). Run the "info" command on both appliances to check the FT state.
3). Run the "services ems disable" command to stop the EMS instances on the problematic appliance.
4). Run the "info" command on both appliances again to check that the EMS instances are active in the FT-peer and down in the problematic box.
5). Run the "halt" command on the problematic appliance.
6). Power down the appliance using the switch on the back panel of the problematic appliance.
7). Replace the faulty disk.
8). Power on the appliance using the switch on the back panel.
9). Once the appliance starts up, use the following command on the CLI (2.1.x or higher) to check the disk status. 

..> support-enable

..> zpool list
all the disks listed should show the "HEALTH" as ONLINE.
..> zpool status

All of the disks listed should have "STATE" as ONLINE.

10). Run the "info" command and check if the EMS instances started correctly.

11). Run the "restore-primary-active" command to correct the FT state.

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