Bosch Appliances Computer Hardware DVA-08K User Manual

RAID Subsystem DVA-08K | Installation Manual

Introduction | en 13 

Bosch Security Systems

F.01U.027.797 | V2 | 2008.08

The subsystem comes with 8 drive trays (see Figure 2.9) designed to accommodate separately 

purchased standard 1-inch pitch, 3.5-inch disk drives. The drive bays are accessed from the 

enclosure front. Two LED’s on the front of the tray are used to indicate the drive status. A key-

lock on each drive tray secures the hard drive in place, while an easily accessible release but-

ton ensures fast and efficient drive hot-swapping. 

Drive Tray Front View

The RAID controller module contains a main circuit board, a preinstalled 256MB capacity or 

above DDR RAM DIMM module, and the necessary support interfaces. The controller module 

contains no user-serviceable components. Except when replacing a faulty unit or installing/

upgrading the cache memory inside, the controller module should never be removed or 

opened.

The subsystems provide external interfaces to host computers and management station(s) 

through the RAID controller’s rear-side faceplate as shown in Figure 2.10. 

Controller Module Faceplate

•

Host Ports

SCSI-320 Host Ports: Two SCSI-320 host channels connect the subsystem to the host 

computers equipped with SCSI-320 compatible adapters through the dual-stack VHDCI 

connectors. The dual-stack connectors facilitate cascade connections for configurations 

such as host clustering or cascading with another RAID subsystem. 

Be careful not to warp, twist, or contort the drive tray in any way (e.g., by dropping it or rest-

ing heavy objects on it). The drive tray has been customized to fit into the drive bays in the 

subsystem. If the drive bay superstructure is deformed or altered, the drive trays may not fit 

into the drive bay.

Although the RAID controller can be removed, the only time you should touch the controller 

itself is to replace the memory module or to install the memory module. The RAID controller is 

built of sensitive components and unnecessary tampering can damage the controller.