Device Warm Swap Support; Disk Device Warm Swap; Procedural Example Involving Hsg80 - HP StorageWorks HSG80 Array Controller V8.7 Maintenance And Service Manual

Common Replacement Information and Procedures

Device Warm Swap Support

Device Warm Swap is supported under the circumstances described below. Please
abide by the following rules related to disk device removal/disk device insertion into
HSx80 Subsystems. Promptly execute the procedure so that the internal detect "swap
signal" terminates the quiesce functionality.

Disk Device Warm Swap

When Disk Device Hot swap is not applicable, Disk Device Warm Swap should be
utilized. Also from a data integrity perspective, the best method of physically
removing a device in a parallel bus multi-drop architecture (such as a SCSI bus) is to
utilize a Warm Swap process. With the HSG/D/Z/J family of storage systems, this
involves quiescing the device bus for which the device will be removed/replaced. This
activity provides a momentary stall on that bus, while work continues on the adjacent
bus.
1. Press the appropriate port button on the controller front panel until the I/O
quiesces on the bus.
2. Remove the disk device.
3. Repeat the above steps to replace a disk device.

Procedural Example involving HSG80

This example shows how to select a device in a storageset, and take the appropriate
measures to remove the physical device from the subsystem.
CLI Commands to HSx80 or Actions
HSx80>show diskxxxxxx
HSx80> locate diskxxxxxx
HSx80> locate cancel
2–18
Verify that disk device (diskxxxxxx) is
not a member of a storageset such as
RAID 1, 0, 0+1, 3/5.
Verify physical location of disk drive.
You might put a physical mark on the
drive.
Verify that disk drive's amber light turns
off.
HSG80 Array Controller V8.7 Maintenance and Service Guide
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