Seagate ST31230N/ND Guía de instalación descargar pdf (Pagina 239)

Hardware maintenance 16-7

Removing and replacing the disk unit in an unshadowed EC 11

Standard 1.0 Option 11 EC Installation and Maintenance Guide November 1999

Removing and replacing the disk unit in an unshadowed

EC 11

Introduction

Each disk in an unshadowed system is mounted on a drive

plate which also contains a backplane connector. The primary

disk for Node 1 occupies the lower position in slot 10. The

primary disk for Node 2 occupies the upper position in slot

10. For a more complete description of the disk drives

including diagrams, see Chapter 6, “Installing the disk drives

and the tape drive.”

Replacing a disk

To replace a disk in an unshadowed system, follow these

steps.

Step Action

1 Courtesy down the system.

2 Power down the EC 11.

3 On the disk drive to be replaced, open the

locklatches and gently pull the drive plate forward

until it clears its large Mass Storage Unit (MSU)

mounting plate.

4 Ensure that the replacement disk drive has the same

part number, including the suffix, as the original disk.

5 Ensure that the SCSI ID on the drive is set to 0 as

follows:

a. Find the ID pins on the disk. 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.

b. Remove jumpers from the ID pins only. (There are

three positions for ID pins, for a combination of

eight possible SCSI addresses, numbered 0–7.)

Result: Removing these jumpers sets the SCSI ID of

the disk to 0.

6 Ensure that parity is enabled.

7 Ensure that terminators are disabled by removing

the Terminator Enable (TE) jumper.

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Seagate ST31230N/ND Guía de instalación Pagina 239