Service Procedures
Service Procedures
Digital PRIORIS HX MP Server
Digital PRIORIS HX MP Server
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MCS Logistics Engineering - Nijmegen
MCS Logistics Engineering - Nijmegen
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Connecting SCSI Devices
The server supports up to 10 internal SCSI devices. Additional SCSI devices can be added to the server by
using an EISA- or PCI-based SCSI host adapter installed in an available expansion slot in conjunction with
an external SCSI expansion box. The PRIORIS HX MP supports the following configurations.
Configuration
Base Server Host Adapter
RAID Server Host Adapter
PRIORIS HX MP
(one processor)
2-channel wide SCSI-2
2-channel wide PCI RAID
PRIORIS HX MP/2
(two processors)
2-channel wide SCSI-2
2-channel wide PCI RAID
PRIORIS HX MP/4
(four processors)
2-channel wide SCSI-2
2-channel wide PCI RAID
Storage Backplane
The storage backplane supports seven hot-swap devices split between two SCSI bus sections: SCSI bus A
and SCSI bus B (see Figure 3-21). SCSI bus A is the upper section and consists of four SCSI device
connections. SCSI bus B is the lower bus section and consists of three SCSI device connections. These
buses can be configured as two independent SCSI channels or as one channel by installing a wide SCSI
jumper cable. Figures 3-22 through 3-26 show the available cable configurations.
The server has been supplied with three SCSI cables and three SCSI bus terminators to configure the server
for up to three internal SCSI channels. Additional cables are available to support external SCSI devices or
as replacement cables.
Figure 3 - 21 Storage Backplane
A
B
C
B
A
B
C
B
A
W1
W2
W3
A = Wide SCSI
B = Narrow SCSI
C = Power
