Replacing the disk drive using Linux

This procedure is used to replace a disk drive in a location that is controlled by a system or logical partition that is running the Linux operating system.

Preparing to remove the disk drive

Log in as root user.
Type iprconfig on the command line of the Linux session and press Enter.
The IBM® Power RAID Configuration Utility display is shown.

Select Analyze log. Press Enter. The Kernel Messages Log display is shown.

Figure 1. Kernel Messages Log

                                      Kernel Messages Log


Select one of the following:

    1. View most recent ipr error messages
    2. View ipr error messages
    3. View all kernel error messages
    4. View iprconfig error messages
    5. Set root kernel message log directory
    6. Set default editor
    7. Restore defaults
    8. View ipr boot time messages


Selection:

e=Exit

Select View most recent ipr error messages from the Kernel Messages Log display. Press Enter.
Find the entry in the log for the disk drive you want to replace.
Record the location information for the disk drive.
Note: The location information has the form of 2:0:8:0. In this example, 2 is the SCSI host number, 0 is the SCSI bus, 8 is the SCSI target ID, and 0 is the LUN (logical unit).
Return to the command line.
Type the following code phrase:
ls -ld /sys/class/scsi_host/host#/device

where # is the SCSI host number. Press Enter.
Record the PCI location information.
Note: The PCI location information has the form of 61:01:0:2.
Type iprconfig on the command line and press Enter.
The IBM Power RAID Configuration Utility display is shown.

Select Display hardware status from the IBM Power RAID Configuration Utility display. Press Enter.

The Display Hardware Status display is shown.

Figure 2. Example Display Hardware Status

                             Display Hardware Status

Type option, press Enter.
  1=Display hardware resource information details

OPT Name   PCI/SCSI Location          Description               Status
--- ------ -------------------------- ------------------------- ----------------
           0000:01:01.0.0/            PCI-X SCSI Adapter        Operational
           0000:41:01.0.1/            PCI-X SCSI Adapter        Operational
    sda    0000:41:01.0.1/0:3:0       Physical Disk             Active
    sdb    0000:41:01.0.1/0:4:0       Physical Disk             Active
    sdc    0000:41:01.0.1/0:8:0       Physical Disk             Active
    sdd    0000:41:01.0.1/1:3:0       Physical Disk             Active
    sde    0000:41:01.0.1/1:4:0       Physical Disk             Active
    sdf    0000:41:01.0.1/1:5:0       Physical Disk             Active
           0001:61:01.0.2/            PCI-X SCSI RAID Adapter   Operational
    sdg    0001:61:01.0.2/0:3:0       Physical Disk             Active
           0001:61:01.0.2/0:6:0       Advanced Function Disk    Active
    sdi    0001:61:01.0.2/0:9:0       Physical Disk             Active
    sdh    0001:61:01.0.2/255:0:0     RAID 10 Disk Array        Failed
           0001:61:01.0.2/0:4:0       RAID 10 Array Member      Failed
           0001:61:01.0.2/0:5:0       RAID 10 Array Member      Failed

e=Exit   q=Cancel   r=Refresh   t=Toggle

Look for the disk drive at the PCI location you recorded. The disk drive might have a failed status.
If the disk drive you want to replace is unprotected or in use, move the data from the disk drive before continuing with this procedure.
For information, see the PCI-X SCSI RAID Controller Reference Guide for Linux.

Type option 1 (Display hardware resource information details) next to the disk drive you want to replace. Press Enter.

A Disk Hardware Resource Information Details display similar to the following is shown.

Figure 3. Example Disk Hardware Resource Information Details display

                 Disk Unit Hardware Resource Information Details


Manufacturer . . . . . . . . . . . . . . : IBM
Product ID . . . . . . . . . . . . . . . : ST336607LC
Firmware Version . . . . . . . . . . . . : 43353048 (C50H)
Serial Number. . . . . . . . . . . . . . : 00006719
Capacity . . . . . . . . . . . . . . . . : 36.40 GB
Resource Name. . . . . . . . . . . . . . : /dev/sdd

Physical location
PCI Address. . . . . . . . . . . . . . . : 0001:50:01.0
SCSI Host Number . . . . . . . . . . . . : 2
SCSI Channel . . . . . . . . . . . . . . : 0
SCSI Id. . . . . . . . . . . . . . . . . : 4
SCSI Lun . . . . . . . . . . . . . . . . : 0

Extended Details
FRU Number . . . . . . . . . . . . . . . : 00P2676
                                                                        More...
Press Enter to Continue

e=Exit   q=Cancel   f=PageDn   b=PageUp

Record the physical location information.
Return to the IBM Power RAID Configuration Utility display.

Removing the disk drive

From the IBM Power RAID Configuration Utility display, select Work with disk unit recovery. Press Enter.

From the Work with Disk Unit Recovery display, select Concurrent remove device. Press Enter. A Concurrent Device Remove display is shown, similar to the following display.

Figure 4. Example Concurrent Device Remove display

                                  Concurrent Device Remove

Choose a single location for remove operations
  1=Select

OPT Name   PCI/SCSI Location          Description               Status
--- ------ -------------------------- ------------------------- -----------------
    sdc    0000:41:01.0.1/0:8:0       Physical Disk             Active
           0000:41:01.0.1/0:5:                                  Empty
    sdb    0000:41:01.0.1/0:4:0       Physical Disk             Active
    sda    0000:41:01.0.1/0:3:0       Physical Disk             Active
           0000:41:01.0.1/1:8:                                  Empty
    sdf    0000:41:01.0.1/1:5:0       Physical Disk             Active
    sde    0000:41:01.0.1/1:4:0       Physical Disk             Active
    sdd    0000:41:01.0.1/1:3:0       Physical Disk             Active
           0001:61:01.0.2/0:8:                                  Empty
    sdh    0001:61:01.0.2/0:9:0       Physical Disk             Active
    sdg    0001:61:01.0.2/0:3:0       Physical Disk             Active

Type option 1 (Select) next to the location for the disk drive you want to replace. Press Enter.
The Verify Device Concurrent Remove display is shown. The concurrent maintenance light turns on for that disk drive slot.
On the Verify Device Concurrent Remove display, verify that the selected disk drive is the disk drive you want to replace, then press Enter. The identify light turns on for the disk drive.
Note: Ensure that the disk drive is not in use to prevent loss of data.
The Complete Device Concurrent Remove display is shown.
Attention:
- Attach a wrist strap to an unpainted metal surface of your hardware to prevent electrostatic discharge (ESD) from damaging your hardware.
- When using a wrist strap, follow all electrical safety procedures. A wrist strap is 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 a 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.
Squeeze and pull the handle of the disk drive out toward you before you remove the disk drive as shown in Figure 5 or Figure 6. If the handle is not all the way out, the disk drive will not slide out of the system or expansion unit.
Figure 5. Removing a disk drive from the system unit

Figure 6. Removing a disk drive from the system unit
Support the bottom of the disk drive as you slide it out of the system or expansion unit. Do not hold the disk drive by the handle.
Loosen and pull out on the thumbscrew (B) to release the disk-drive bezel (C) from the disk drive, as shown in the following figure.
Figure 7. Removing a disk-drive bezel
Press Enter on the IBM Power RAID Configuration Utility to indicate that you have removed the disk drive.

Replacing the disk drive

Find the package that contains the new disk drive.
Attention: Disk drives are fragile. Handle them with care.
Remove the disk drive from its protective package.
Unlock the disk drive handle by squeezing and pulling it out toward you before you install the disk drive. If the handle is not all the way out, the disk drive will not slide into the system or expansion unit.
Follow these steps to install the disk-drive bezel on the replacement disk drive:
1. Attach the bezel (A) to the disk drive, as shown in the following figure.
2. Press in and then tighten the thumbscrew (B) to secure the bezel to the disk drive.
  Figure 8. Attaching a bezel to the disk drive
From the IBM Power RAID Configuration Utility display, select Work with disk unit recovery. Press Enter.

From the Work with Disk Unit Recovery display, select Concurrent add device. Press Enter.

A Concurrent Device Add display similar to the following is shown.

Figure 9. Example Concurrent Device Add display

                                     Concurrent Device Add

Choose a single location for add operations
  1=Select

OPT Name   PCI/SCSI Location          Description               Status
--- ------ -------------------------- ------------------------- -----------------
           0000:41:01.0.1/0:5:                                  Empty
           0000:41:01.0.1/1:8:                                  Empty
           0001:61:01.0.2/0:8:                                  Empty

Type option 1 (Select) next to the location from which you removed the disk drive.
The Verify Device Concurrent Add display is shown.
Press Enter on the Verify Device Concurrent Add display. The Complete Device Concurrent Add display is shown.
Support the bottom of the disk drive as you align it with the guide rails in the system or expansion unit. Do not hold the disk drive by the handle.
Slide the disk drive all the way into the system or expansion unit and then lock it in place by pushing in the disk drive handle, as shown in Figure 10 or Figure 11.
Figure 10. Installing a disk drive in the system unit

Figure 11. Installing a disk drive in the system unit
Press Enter on the Complete Device Concurrent Add display to indicate that the disk drive is installed.
Rebuild the data on the replacement disk drive. For instructions, go to Rebuilding data on a replacement disk drive using Linux.
Go to Verifying a repair. This completes this procedure.