Seagate ST31230N/ND Guia de Instalação descarregar pdf (Página 242)

16-10 Hardware maintenance

Removing and replacing the disk unit in a shadowed EC 11

Standard 1.0 Option 11 EC Installation and Maintenance Guide November 1999

Replacing the primary

disk

To replace the primary disk in a shadowed system, follow

these steps.

Step Action

1 Disable disk shadowing.

2 Courtesy down the system.

3 Power down the EC 11.

4 To remove the disk drives for the affected node,

open the locklatches on the primary and secondary

disk drive plates for the affected node, and gently

pull the drive plates forward until they clear the MSU

mounting plates. Remove the disk cover plates as

necessary, to gain access to the jumpers.

5 Change the SCSI address on the existing

secondary

drive to make it the

primary

drive; that is, change the

SCSI address on the secondary drive from 2 to 0 by

removing the ID jumper in the second pin position.

See Chapter 6, “Installing the disk drives and the

tape drive” for the corresponding diagram of ID pin

locations for the type of disk drive supplied.

6 Set the SCSI address on the replacement disk to 2

by removing any ID jumpers and inserting a jumper

on the header in the second pin position. This

makes the replacement drive the new

secondary

drive.

7 Ensure that parity is enabled. See the corresponding

diagram for jumper settings.

8 Ensure that the terminators are disabled by

removing the Terminating Enable (TE) jumper.

9 Install the new (now secondary) disk into the slot 10

MSU plate, and the old (now primary) disk with the

power pack into the slot 12 MSU plate.

10 Power up and restart the system.

11 Synchronize the disks.

Result: The system copies data from the primary

disk to the secondary disk. Refer to the “Enabling/

disabling disk shadowing” topic on page 16-13.

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Seagate ST31230N/ND Guia de Instalação Página 242

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