-C H A P T E R

C H A P T E R 13

Removing Disk Drives

This chapter contains procedures for removing and installing an FC-AL hard disk drive.

The chapter contains the following sections:

Overview

Hot Swapping a Disk Drive

Changing a Disk Drive (Non Hot Swap)

Caution - The plug at the end of the AC power cord is the primary means of disconnection for the Netra 20 AC system.

Caution - To isolate the Netra 20 DC system, open all external circuit breakers.

Overview

The following procedure is concerned with the physical removal and replacement of a hard disk drive as

A non hot swap device

A hot swap device

From an operational point of view, whether a disk can be considered to be a hot swap device and can be removed without shutting down Solaris depends on how the disk drives are configured in the operating environment.

The disk is a hot swap device if:

The disk is not a root disk.

or if both of the following statements are true:

The disk is a root disk.

The disk is mirrored or RAID-5 protected.

In other words, if the disk is a root disk and is not mirrored, you must treat it as a non hot swap device.

FIGURE 13-1 FC-AL Disk Drives

Hot Swapping a Disk Drive

Preparation

Before proceeding to remove a hard disk drive, carry out the following:

1. Lower the front fascia.

See Removing the Front Fascia.

2. Use the World Wide Number (WWN) or Target ID to identify the disk.

# ls -als /dev/rdsk/*

2 lrwxrwxrws 1 root root 74 May 10 11:16 /dev/rdsk/c0t1d0s0 ->

../../devices/pci@8,600000/SUNW,qlc@4/fp@0,0/ssd@w2100002307652252,0:a,raw

[truncated for clarity]

2 lrwxrwxrws 1 root root 74 May 10 11:16 /dev/rdsk/c0t2d0s1 ->

../../devices/pci@8,600000/SUNW,qlc@4/fp@0,0/ssd@w2100002307653317,0:a,raw

[truncated for clarity]

For internal FC-AL disks:

Target ID Number = Disk Bay Number

For external FC-AL disks:

Target ID = (Multipack ID x 8) + Drive Bay Number

3. Identify the disk to be removed and the bay in which it is installed.

4. Identify all volumes or applications using the drive.

If the volumes are mirrored or RAID 5-protected, you can replace the drive without taking down the volume.

Otherwise stop all I/O activity on the disk drive using the appropriate commands for the particular application.

Removing a Disk Drive

1. Carry out the steps listed in Preparation.

2. Isolate the drive from the operating environment.

Caution - Ensure that no file systems are mounted on the device and back up all data before proceeding.

Logically remove the drive from the FC-AL bus by typing:

# luxadm remove_device /dev/rdsk/c1t1d0s2

The list of devices which will be removed is:

1: Device /dev/rdsk/c1t1d0s2

Please enter q to Quit or <Return> to Continue:

Stopping: /dev/rdsk/c1t1d0s2....Done

Offlining: /dev/rdsk/c1t1d0s2....Done

Hit <Return> after removing the device(s)

3. Ensure that the OK to Remove Disk LED is lit, then push the disk drive latch downwards to release the drive handle.

4. Using the drive handle, ease the drive from the drive bay until you feel the drive connector disengage from the FC-AL backplane connector.

5. Holding the disk by the handle, slide the disk drive out of the bay.

Support the weight of the drive with your other hand to avoid unnecessary pressure on the drive handle.

6. Place the disk drive on an antistatic mat.

Installing a Disk Drive

1. Logically add the drive to the FC-AL bus by typing:

# luxadm insert_device

The list of devices which will be inserted is:

1: Device /dev/rdsk/c1t2d0s2

Please enter q to Quit or <Return> to Continue:

Stopping: /dev/rdsk/c1t1dos2....Done

Offlining: /dev/rdsk/ccc11t1dos2....Done

Hit <Return> after insertion of the device(s)

2. If necessary, lower the front fascia.

See Removing the Front Fascia.

3. Align the disk drive with the slot in the drive bay.

4. Slide the disk drive into the drive bay until it makes contact with the FC-AL backplane connector.

Do not force it home.

5. Lock the drive in the bay by pressing on the drive handle until the drive latch closes.

This action engages the drive with the FC-AL backplane connector.

6. Refit the front fascia.

See Fitting the Front Fascia.

7. Press <Return> to answer the last line of Step 1.

Changing a Disk Drive (Non Hot Swap)

This section describes how to change an unmirrored root disk drive.

Preparation

Before proceeding to remove a hard disk drive, carry out the following:

1. Use the World Wide Number (WWN) or Target ID to identify the disk.

# ls -als /dev/rdsk/*

2 lrwxrwxrws 1 root root 74 May 10 11:16 /dev/rdsk/c0t1d0s0 ->

../../devices/pci@8,600000/SUNW,qlc@4/fp@0,0/ssd@w2100002307652252,0:a,raw

[truncated for clarity]

2 lrwxrwxrws 1 root root 74 May 10 11:16 /dev/rdsk/c0t2d0s1 ->

../../devices/pci@8,600000/SUNW,qlc@4/fp@0,0/ssd@w2100002307653317,0:a,raw

[truncated for clarity]

For internal FC-AL disks:

Target ID Number = Disk Bay Number

For external FC-AL disks:

Target ID = (Multipack ID x 8) + Drive Bay Number

2. Lower the front fascia.

See Removing the Front Fascia.

3. Identify the disk to be removed and the bay in which it is installed.

4. If the system is running, shut it down and remove the power.

5. Initiate antistatic precautions.

See Antistatic Precautions.

Removing an Unmirrored Root Disk

1. Perform the steps listed in Preparation.

2. Push the disk drive latch downwards to release the drive handle.

3. Using the drive handle, ease the drive from the drive bay until you feel the drive connector disengage from the FC-AL backplane connector.

4. Holding the disk by the handle, slide the disk drive out of the bay.

Support the weight of the drive with your other hand to avoid unnecessary pressure on the drive handle.

5. Place the disk drive on an antistatic mat.

Installing an Unmirrored Root Disk

1. Perform the steps listed in Preparation, as required.

2. Align the disk drive with the slot in the drive bay.

3. Slide the disk drive into the drive bay until it makes contact with the FC-AL backplane connector.

Do not force it home.

4. Lock the drive in the bay by pressing on the drive handle until the drive latch closes.

This action engages the drive with the FC-AL backplane connector.

5. Refit the front fascia.

See Fitting the Front Fascia.

6. Power on the system and perform a reconfiguration boot by typing:

ok boot -r