HP StorageWorks 2300, DS2300 System Configuration

Replacement Procedure: DS2300 Disk Drive, 18GB-36GB-72GB

You can add or replace disks to increase storage capacity or eliminate faults. (See Chapter 4 of the

HP StorageWorks Disk System 2300 User’s Guide for troubleshooting procedures.)

Disks must be Ultra-3 SCSI (LVD) and 3.5 inches wide but can vary in capacity.
For current information about supported disks, consult an HP sales representative.
You do not need to turn off the disk system to replace a disk or filler.
Caution Do not remove hot-pluggable components until you have the replacement parts and are ready to

install them. An empty slot will cause uneven cooling and eventual overheating.

Preparation (HP-UX 11.XX)

Removing or replacing a disk has consequences for the file systems and logical volumes located on the disk.
Before removing or replacing a disk, complete the appropriate system administration for your environment
and configuration.

Instructions for determining physical volume status and reducing and recreating mirrored extents follow. For
additional information, refer to your HP-UX guide, How HP-UX Works: Concepts for the System
Administrator.

The LVM commands in the following instructions assume the following:

?? All of the extents of the disk in use belong to mirrored logical volumes created with the strict (-s)

option.

?? The replacement disk is of the same or greater capacity as the disk being replaced.

The correct set of instructions depends on whether the mirrored volume is active and attached, or
unattached.

First, follow the instructions to determine the volume status; then follow the instructions to replace the volume
depending on whether the volume is attached or unattached.

Shortcuts:

To Determine If a Volume Group or Physical Volume Group is Active

To Determine If the Physical Volume is Attached
To Replace Attached Physical Volumes
To Replace Unattached Physical Volumes
NT
Disk Replacement Procedure

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To Determine If a Volume Group or Physical Volume Group is Active

At the host console, enter:

# vgdisplay <VG name>

For example: #vgdisplay /dev/vg00

If the volume group is not active, the host will display:

# vgdisplay: volume group not activated.

# vgdisplay: cannot display volume group /dev/vg00

Note The following messages will appear if the disk is defective:

VGDISPLAY: WARNING: COULDN’T QUERY PHYSICAL VOLUME ”/dev/dsk/c2t4d0”

THE SPECIFIED PATH DOES NOT CORRESPOND TO PHYSICAL VOLUME ATTACHED TO THE

VOLUME GROUP

VGDISPLAY: WARNING: COULDN’T QUERY ALL OF THE PHYSICAL VOLUMES

If either of the above messages appears, follow the replacement instructions for

Unattached Physical Volumes.

Otherwise, follow the instructions to determine if the physical volume is attached.

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To Determine If the Physical Volume is Attached

At the host console, enter:

# vgchange -a y <volume group name> to activate the volume group.

For example: # vgchange -a y /dev/vg00

The physical volume is unattached if a message similar to the following appears:

VGCHANGE: WARNING: COULDN’T ATTACH TO THE VOLUME GROUP PHYSICAL VOLUME

/dev/dsk/c2t4d0

THE PATH OF THE PHYSICAL VOLUME REFERS TO A DEVICE THAT DOES NOT EXIST, OR IS

NOT CONFIGURED INTO THE KERNEL.

Continue with the appropriate replacement instructions as follows:

If the physical volume is unattached, follow the instructions for replacing

Unattached Physical Volumes.

If the physical volume is attached, follow the instructions for replacing

Attached Physical Volumes.

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