Key Digital 8400 - Manual (Page 10)

AlphaServer 8400
Alpha Servers 3.215
Step 6a—Non-Backplane External Storage Controllers (continued)
HSZ54-AJ StorageWorks RAID Array 450/HSZ50 512 MB quad SCSI controllers, 12 SCSI channels, 72 SCSI-
two-device connections, 64 LUN maximum, four cache modules, two dual external cache battery
system building blocks, four external cache batteries, four 2-meter cables.
HSJ50-AF 32 MB Cache 6 channel CI array controller with cache battery
HSJ50-AH 64 MB Cache 6 channel CI array controller with cache battery
HSJ50-AJ 128 MB Cache 6 channel CI array controller with cache battery
HSJ52-AF Dual 64 MB Cache CI array controller with cache batteries
HSJ52-AH Dual 128 MB Cache CI array controller with cache batteries
HSJ52-AJ Dual 256 MB Cache CI array controller with cache batteries
HSJ54-AJ Quad 512 MB Cache CI array controller with cache batteries
HSD50-AF DSSI Controller, 6 channel, 64MB cache & external cache battery
HSD50-AH DSSI Controller, 6 channel, 32MB cache & external cache battery
HSD50-AJ DSSI Controller, 6 channel, 128MB cache & external cache battery
HSD52-AF Two DSSI Controllers with 32 MB cache with battery
HSD52-AH Two DSSI Controllers with 64 MB cache with battery
HSD52-AJ Two DSSI Controllers with 128 MB cache with battery
Step 7—Storage
Note: When multiple storage devices are configured with the system, specify which devices should be installed inside the
system cabinet, inside the system expansion cabinet, or installed in the external StorageWorks cabinet. Line item
sequencing allows Manufacturing to configure storage options in the appropriate cabinet.
- List storage options to be integrated in system cabinet immediately following the system part number.
- List storage options to be integrated in StorageWorks cabinet immediately following StorageWorks cabinet part
number.
- Order the appropriate BN21*-** SCSI cables for connecting controllers and SCSI storage options.


Wide SCSI devices are supported in BA660-AB/BA661-AA StorageWorks PIUs, or external StorageWorks cabinets.
BA660-AB/BA661-AA support both wide and narrow SCSI 5400 RPM and 7200 RPM disk drives.



System cabinet provides space for four disk plug-in units (PIU) if no PCI or XMI plug-in units are installed. Each of the
two pairs of expansion bays (front to back) in bottom of system cabinet can hold one Battery PIU, one XMI PIU, one
PCI PIU, one PCI PIU plus one SCSI disk PIU, one SCSI disk PIU, or two SCSI disk PIUs.


System cabinet provides space for up to seven StorageWorks shelves—three BA660-AB plug-in-units (each includes
two StorageWorks shelves) and one BA661-AA StorageWorks shelf. Each shelf holds a maximum of two 5.25” devices
and one 3.5” device or seven 3.5” devices. Typical configurations will require a signal converter, i.e., DWZZB-VW
which counts as one 3.5” device.
Wide SCSI Options


StorageWorks shelves (BA356-xx) are normally configured in single bus mode (seven SCSI devices per shelf). To
configure BA356-xx shelf in split-bus mode the following options are required:
- Split-bus terminator (BA35X-ME)
- SCSI controller for each active SCSI port
- SCSI cables to connect each controller to BA356-xx shelf
BA660-AB * Wide SCSI-2 StorageWorks plug-in-unit


includes two BA356-LB modular expansion shelves, 16-
bit I/O personality module, 48V/150W DC power supply, DC fans, and AlphaServer 8400 mounting
hardware. Supports 16-bit wide SCSI devices and some 8-bit narrow SCSI devices depending on
compliance with minimum hardware revision levels.
BA661-AA * Wide SCSI-2 StorageWorks Shelf


includes 16-bit I/O personality module, 48V/150W DC power
supply, DC fans, mounting hardware and BA356-LB. Can be added to DWLPB-AA/AB in place of
second PCI expansion box (DWLPB-BA/BB). Maximum one BA661-AA per DWLPB-AA/AB;
maximum six BA661-AA per system. Supports 16-bit (wide) SCSI and some 8-bit (narrow) SCSI
devices.
DWZZB-VW Wide SCSI-2 StorageWorks Signal Converter—required to convert FWD signals from KFTIA-AA
and KZPSA-BB for use in BA660-AB and BA661-AA/BA.