Hitachi Unified Storage VM User Manual

Hardware overview
2–5
Hitachi Unified Storage VM Product Overview Guide
Drive boxes
The Unified Storage VM storage system can be configured in many ways,
starting with a one-rack, diskless system to a large, three-rack system that
includes a controller chassis and up to 48 standard drive boxes or up to 24
dense drive boxes. Standard and dense drive boxes can be intermixed in a
Unified Storage VM system to meet specific storage requirements. More
detail about the drive boxes is provided in the Hitachi Unified Storage VM
Block Module Hardware User Guide.
• DBS (Drive Box, Small form factor drives). This drive box can contain
up to 24 vertically mounted. 2-1/2-inch HDD or SDD drives.
• DBL (Drive Box, Large form factor drives). This drive box can contain
up to 12 horizontally mounted. 3-1/2-inch HDD or SDD drives.
• DBF (Drive Box, FMD drives). This drive box can contain up to 12
horizontally mounted. 5-1/4-inch Flash module drives.
Figure 2-3 Controller chassis, front (above) and rear (below)

Hitachi Unified Storage VM Specifications

General

Brand	Hitachi
Model	Unified Storage VM
Category	Storage
Language	English