Sun Microsystems Ultra 5, Service Manual

Page: 183 / 258

Appendix A Product Specifications and Reference Information A-7
A.5.4 Hard Drive Cabling Configuration (With Two
Mirrored Drives)
The following diagram shows the drive cabling configuration when the system
contains two mirrored hard drives:
■
Primary channel—One hard drive jumpered as master
■
Secondary channel—One hard drive jumpered as master
FIGURE A-4
Hard Drive Mirroring Configuration
Note –
The two hard drives that are mirrored cannot be on the same channel. Both
hard drives must be jumpered as the master device on two separate channels.
Note –
If a CD-ROM drive is included in an Ultra 5 system with this hard drive
mirroring configuration, the CD-ROM drive must be jumpered as a slave device on
either the primary or the secondary channel.
For more information on hard drive mirroring, see Section 7.2.4 “Hard Drive
Mirroring” on page 7-11.
A.5.5 Jumper Settings
Prior to installing a CD-ROM drive or hard drive in an Ultra 5 system, verify that
the drive’s back panel mode-select jumper is set as follows:
■
Set the CD-ROM drive jumper (located on the CD-ROM drive back panel) to MA
■
Set a hard drive jumper to CS
Primary IDE channel
Motherboard J15
(primary channel)
Primary hard drive
(master-device 0)
Secondary IDE channel
Optional CD-ROM Motherboard J14
(secondary channel)
Primary hard drive
(master-device 0)
(slave-device 1)