System Setup and Configuration
3.4 (Optional) DSSI Ports Assignment
3.4 (Optional) DSSI Ports Assignment
The last two slots in the BA440 enclosure will contain DSSI bulkheads if
ordered. Slot 11 is assigned Bus 2 and slot 12 is Bus 3.
3.5 Mass Storage Options (Internal)
The mass storage shelf of a BA440 enclosure provides four storage cavities
for embedded mass storage options. The rightmost storage cavity can contain
a tape drive (TF85/TF86, TK-series, or TLZ04); all four storage cavities can
contain an EF/RF-series ISE.
Combinations of dual-disk, single-disk, or tape ISEs can be used to gain the
full complement of seven DSSI devices on the internal DSSI bus (Bus 0).
VAX 4000 Model 500A/505A/600A/700A/705A systems can support the following
combinations of mass storage options embedded in the system enclosure:
• One tape drive (TF85/TF86, TK-series, or TLZ04) and up to six EF
/RF-series ISEs using the dual-disk RF35.
• No tape drive and up to seven RF-series ISEs using the dual-disk RF35.
Note
The RF35, which has dual-disk capability, can be ordered with a single
disk.
Figure 3–2 shows an example of a mass storage configuration consisting of a
TF85/TF86 tape drive, two RF35s, and two RF73s.
Rules for Numbering Storage Devices
Use the rules below for numbering (bus node ID and MSCP unit numbers)
storage devices:
• For each DSSI bus, do not duplicate bus node ID numbers for your storage
devices/adapter. For Bus 0, you can have only one storage device identified
as bus node 0, one storage device as 1, and so on; for Bus 1, you can have
only one storage device identified as bus node 0, one storage device as 1,
and so on.
• The previous rule also applies to DSSI VAXcluster configurations; all DSSI
bus node numbers for storage devices and DSSI adapters must be unique
in a shared DSSI bus.
3–8 System Setup and Configuration
