Bosch Appliances Computer Hardware DVA-08K User Manual

RAID Subsystem DVA-08K | Installation Manual

Introduction | en 

7 

Bosch Security Systems

F.01U.027.797 | V2 | 2008.08

This manual covers the DVA-08K series of RAID subsystems.

With its basic hardware redundancy and the capability of fast I/O transfer, the 2U RAID SATA 

subsystem is an ideal solution to meet the ever increasing demands for addition of storage 

capacity. Despite its ease of use, the subsystem does not compromise data protection for 

convenience. The subsystem’s embedded firmware offers the same protection and mainte-

nance functionalities as those designed for an enterprise-level RAID solution. The subsystems 

provide unprecedented configuration flexibility and allow for the customization of storage 

subsystems to meet specific demands. It is a rigorous and durable subsystem that can be eas-

ily configured and operated.

Fully featured RAID redundancy (which provides advanced data protection) ensures that the 

complete range of RAID levels (RAID 0, 1(0+1), 3, 5, 10, 30 and 50) is supported by the con-

troller head. A long list of sophisticated firmware functions (dedicated/global hot-spares, bat-

tery protected disk cache, configurable reaction schemes against drive errors, remote and 

real-time array monitoring, and more) further guarantees the overall availability of valuable 

data.

IT managers using the RAID subsystems will be able to rapidly develop a comprehensive stor-

age array. And the modular nature of the subsystem minimizes the maintenance effort to use 

the RAID appliance.

The subsystem comes with two (2) SCSI-320 host channels interfaced through four (4) VHDCI 

68-pin SCSI ports. The subsystem comes in a 2U-profile rack-mountable chassis which houses 

a RAID controller module featuring complete RAID configuration and data protection function-

ality. The subsystem’s operation is protected by redundant, hot-swappable power supplies 

and cooling fan modules. Designed for a high level availability, all major components are hot-

replaceable including its Li-ION battery and the RAID-protected disk drives.

The subsystem supports high-density array capacity by its eight drive bays for SATA-II inter-

face disk drives. The subsystem facilitates large I/O transfer, over its dual PCI-X buses archi-

tecture, and transmission of block I/Os over flexible caching and a dedicated XOR engine. The 

subsystem is ideal for direct-attached data storage, backup, and retrieval. It combines the 

capabilities and block-level performance of RAID storage with the reliable SCSI transfer tech-

nologies.

Configured arrays are easily combined with multiple ID/LUNs that appear to the host ports, 

turning massive capacity into manageable units for data-sharing in a heterogeneous environ-

ment.

The RAID 2U-profile, SCSI-to-SATA RAID storage comes in two different models. The only dif-

ference between the two models is the number of SATA-II drive bays. 

Connectivity: The subsystem features a 320MB/s bandwidth from each of its SCSI host chan-

nels. The dual-stack VHDCI connectors on the rear panel facilitate the connection to multiple 

host computers and combining the storage capacities of multiple RAID subsystems. Its back-

ward compatibility with older SCSI protocols requires minimum investment for upgrading 

equipment.  Storage volumes are associated with SCSI ID/LUNs on the host channels. The 

subsystem firmware provides flexible configurations of storage volumes which include, logical 

drives in supported RAID 0, 1 (0+1), 3, and 5 levels, logical volumes that consist of one or 

more logical drives, and the logical partitions of the previously mentioned configurations. 

These volumes then appear as SCSI targets over the host links.