Removing a disk drive from the 8335-GTC, 8335-GTG, 8335-GTH, 8335-GTW, or 8335-GTX system

To remove a disk drive, complete the steps in this procedure.

Procedure

Remove the front cover. For instructions, see Removing the front cover from an 8335-GTC, 8335-GTG, 8335-GTH, 8335-GTW, or 8335-GTX system.
Attach the electrostatic discharge (ESD) wrist strap.
The ESD wrist strap must be connected to an unpainted metal surface until the service procedure is completed, and if applicable, until the service access cover is replaced.
Attention:
- Attach an electrostatic discharge (ESD) wrist strap to the front ESD jack, to the rear ESD jack, or to an unpainted metal surface of your hardware to prevent the electrostatic discharge from damaging your hardware.
- When you use an ESD wrist strap, follow all electrical safety procedures. An ESD wrist strap is used for static control. It does not increase or decrease your risk of receiving electric shock when using or working on electrical equipment.
- If you do not have an ESD wrist strap, just prior to removing the product from ESD packaging and installing or replacing hardware, touch an unpainted metal surface of the system for a minimum of 5 seconds. If at any point in this service process you move away from the system, it is important to again discharge yourself by touching an unpainted metal surface for at least 5 seconds before you continue with the service process.
Locate the faulty drive. The amber drive LED is turned on when a drive has an issue.

If a drive's amber LED is lit, go to step 4.

If a drive has an issue and if the amber LED is not lit, use the following procedure to locate the drive. Run the following commands from an operating system command window.
1. Determine the drive that must be replaced as indicated by the operating system.
  For example, the drive might be referenced as sda or sdb.
  Attention: The operating system is typically on sda. Do not remove this drive when the system powered on unless the sda drive is part of a RAID configuration. If the drive that contains the operating system needs to be removed, and that drive is not part of a RAID array, you must first power off the system before removing that drive.
2. Gather the physical serial number of the identified drive by running the following hdparm command, where sdX is the drive to replace:
```
hdparm –i /dev/sdX | grep –i serial
```
  The hdparm command is in the hdparm package; install the package if you have not installed it already.
```
apt-get install hdparm
```
  Or:
```
yum install hdparm
```
3. Run the following command to identify the physical drive, where sdX is the drive to replace:
  The command causes the green LED on the drive to flash.
```
dd if=/dev/sdX of =/dev/null
```
  You can also use the optional usysident package to turn on or turn off the amber LED. Run the following command to turn on the amber LED:
```
usysident -d sdX -s identify
```
  Run the following command to turn off the amber LED:
```
usysident -d sdX -s normal
```
4. To prepare the drive for removal, disable it by running the following command, where sdX is the drive to replace.
```
echo 0 >/sys/block/sdX/device/delete
```
5. Verify that you disabled the write operation on the drive by using the lsscsi command. When the drive is disabled, the drive no longer appears in the output.
```
lsscsi
```
Unlock the drive bay handle (B) by pushing the handle release (A) up. The handle (B) snaps out towards you. If the handle does not snap out all the way, the drive does not slide out of the system.
See Figure 1.
Figure 1. Disk drive lock detail
Support the bottom of the disk drive as you slide it out of the system. Do not hold the disk drive by the handle.
If you are removing more than one drive, repeat the steps in this procedure until all drives are removed.