C H A P T E R 3

Replacing Hot-Swappable and Hot-Pluggable Components

Hot-pluggable devices are those devices that can be removed and installed while the system is running, but you must perform administrative tasks first. The Sun Netra T6340 Server Module hard drives can be hot-swappable (depending on how they are configured).

For information about a hot-swappable or hot-pluggable PCI ExpressModule (PCI EM) or network express module (NEM), see the service manual for your modular system chassis.

This chapter describes how to remove and replace the hot-swappable and hot-pluggable field-replaceable units (FRUs) in the Sun Netra T6340 Server Module.

The following topics are covered:

- Hot-Plugging a Hard Drive

- Adding PCI ExpressModules

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3.1 Hot-Plugging a Hard Drive

The hard drives in the Sun Netra T6340 Server Module are hot-pluggable, but this may be affected by hard drive software configuration.

### 3.1.1 Rules for Hot-Plugging

To safely remove a hard drive, you must:

- Prevent any applications from accessing the hard drive.

- Remove the logical software links.

Hard drives cannot be hot-plugged if:

- The hard drive provides the operating system, and the operating system is not mirrored on another drive.

- The hard drive cannot be logically isolated from the online operations of the server module.

If your drive falls into these conditions, you must shut the system down before you replace the hard drive. See Shutting Down the System.

### 3.1.2 Removing a Hard Drive

1. Identify the physical location of the hard drive that you want to replace (FIGURE 3-1).

2. Type the Solaris OS commands required to stop using the hard drive.

The exact commands required depend on the configuration of your hard drives. You might need to unmount file systems or perform RAID commands.

One command that you might use to take the drive offline is `cfgadm`. For more information see the Solaris `cfgadm` man page.

3. Verify that the blue Drive Ready to Remove LED is illuminated on the front of the hard drive.

FIGURE 3-1 Removing a Hard Drive

4. Push the latch release button (FIGURE 3-1).

| Caution - The latch is not an ejector. The latch can be damaged if you bend it too much. Handle the hard drive carefully: the hard drive printed circuit board is not covered.

5. Grasp the latch and pull the drive out of the drive slot.

### 3.1.3 Replacing a Hard Drive or Installing a New Hard Drive

The hard drive is physically addressed to the slot in which it is installed.

Note - If you removed a hard drive, ensure that you install the replacement drive in the same slot.

FIGURE 3-2 Replacing a Hard Drive

1. If necessary, remove the hard drive filler panel.

2. Slide the drive into the bay until it is fully seated (FIGURE 3-2.).

3. Close the latch to lock the drive in place.

4. Perform administrative tasks to reconfigure the hard drive.

The procedures that you perform at this point depend on how your data is configured. You might need to partition the drive, create file systems, load data from backups, or have data updated from a RAID configuration.

- You can use the Solaris command `cfgadm -al` to list all disks in the device tree, including 'unconfigured' disks.

- If the disk is not in the list, such as with a newly installed disk, you can use `devfsadm` to configure it into the tree. See the `devfsadm` man page for details.

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3.2 Adding PCI ExpressModules

The PCI ExpressModules (PCI EMs) plug into the chassis. To verify installation and to set up the PCI EMs see:

- The service manual for your modular system chassis.

- Sun Integrated Lights Out Manager 3.0 Supplement for Sun Netra T6340 Server Modules, 821-0903

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