Hp NonStop G-Series Manual de usuario Pagina 30

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Nomadic Disk Hardware and Software
ServerNet Nomadic Disk (Release 2) User’s Guide523968-001
2-6
Extended Remote Mirroring Configuration
Extended Remote Mirroring Configuration
Figure 2-3 shows a Nomadic disk system configuration with a single processor
enclosure that mirrors internal disk drives at distances beyond the five kilometer
cabling limit of the previous configurations. Fiber-optic cabling to the backup site
containing the mirror disk drives can extend up to 40 kilometers.
Table 2-2. Hardware Required for External Disk Drive Configurations
Hardware Item Function
Troubleshooting
Information
455mod8 disk
modules
(containing up to
eight disk drives
each)
Contains the database. SCF Reference Manual for
the Storage Subsystem
45xx Modular Disk
Subsystem Manual for
G-Series Releases
MSEB Routes ServerNet packets to/from
the disk drives (see Table 2-1
for
details).
Contact professional
services
Single-mode fiber-
optic (SMF) cabling
Connects MSEB to I/O multifunction
(IOMF) 2 CRU in I/O enclosure.
Contact professional
services
ServerNet Device
Adapter (SNDA)
Fiber-optic ServerNet addressable
controllers (F-SACs) provide one
ServerNet/DA port in an I/O
enclosure for connections to a 45xx
disk module.
6760 ServerNet/DA Manual
Multimode fiber-optic
(MMF) cabling
Connects ServerNet/DA F-SAC to a
45xx disk module.
Contact professional
services
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