Removing disks

You remove a disk for the following reasons:

It is a failed disk. You cannot use this disk again.
It is a hot spare and you want to use it elsewhere.
It is a data disk, is producing excessive error messages, and is about to fail. You cannot use this disk again.
Note
You cannot shrink the number of disks in a file system by removing data disks. The only way to reduce the number of data disks in a file system is to copy the data and transfer it to a new file system that has fewer data disks.

To remove a failed disk, complete the following steps.

Step	Action
1	Find the disk ID of the failed disk by entering the following command: vol status -f Result The ID of the failed disk is shown next to the word "failed." The location of the disk is shown to the right of the disk ID, under the column headed HA SHELF BAY.
2	If the disk is a...	Then...
	Fibre Channel disk	Go to Step 3.
	SCSI disk	Enter the following command, then go to Step 3: disk swap
3	Remove the disk from the disk shelf according to the disk shelf manufacturer instructions.

To remove a hot spare disk, complete the following steps.

Step	Action
1	Find the disk IDs of hot spare disks by entering the following command: vol status -s Result The names of the hot spare disks are shown next to the word "spare." The locations of the disks are shown to the right of the disk name.
2	Enter the following command to spin down the disk: disk remove disk_name disk_name is the name of the disk you want to remove (from the output of Step 1).
3	If the disk is...	Then...
	A SCSI disk	Enter the following command, then go to Step 4: disk swap
	A Fibre channel disk	Go to Step 4.
4	Wait for the disk to stop spinning. See the hardware guide for your disk shelf model for information about how to tell when a disk stops spinning.
5	Remove the disk from the disk shelf, following the instructions in the hardware guide for your disk shelf model. Result: File service resumes 15 seconds after you remove the disk.

To remove a data disk that is about to fail, complete the following steps.

Step	Action
1	Find the disk name in the log messages that report the errors by looking at the numbers that follow the word "Disk."
2	At the filer, enter the following command: vol status -r
3	Look at the HA.ID column of the output of the `sysconfig -r` command. It shows the disk ID of each disk. The location of the disk is shown to the right of the disk ID, under the columns headed HA SHELF BAY.
4	Enter the following command to fail the disk: disk fail disk_name disk_name is the disk name from the output in Step 1. Result After you complete this step, the system operates in degraded mode, which means that a disk is missing from the RAID group.
5	If the disk is...	Then...
	A SCSI disk	Enter the following command, then go to Step 6: disk swap
	A Fibre Channel disk	Go to Step 6.
6	Remove the disk from the disk shelf, following the instructions in the hardware guide for your disk shelf model. Result: File service resumes 15 seconds after you remove the disk.