hardware components
The following sections describe the HUS VM storage system components.
Overview
The Hitachi Unified Storage VM storage system (HUS VM) is an entry-level
enterprise storage system offering the features and functions of a high-end
enterprise-class system with the configuration simplicity of a modular system.
At a high level, it is comprised of a controller chassis and a variety of drive
trays in a one to five rack configuration.
The HUS VM offers an entirely new type of scalable high performance
storage, capable of supporting demanding workloads while providing great
flexibility. It offers much higher performance, better scalability, higher
reliability, and greater flexibility than any competitive offering today.
The controller design is a “compacted logical” implementation of the HiStar
design as used in the VSP system, but it uses completely different hardware
with some faster, newer generation parts. The HUS VM uses most of the
system software from the VSP system. In general, it could be seen as a
smaller VSP that provides a lot of I/O power as well as most of the features
of a VSP system.
The HiStar based controller supports the SAS cables, DDR3 cache DIMMs, and
the front end and back end connectivity modules from the HUS 100 family, as
well as the HUS 100 drive trays as described in the following table.
Table 1-1 Supported HUS VM components
Drive tray Description Maximum trays / drives per system
CBX / CBXC 5U Controller chassis 1
DBS / DBSC 2U x 24 SFF drives 48 / 1,152
DBL / DBLC 2U x 12 LFF drives 48 / 576
DBF 2U x 12 FMD drives 48 / 576
DBX 4U x 48 LFF drives 24 / 1,152
DB60 / DB60C 4U x 60 LFF drives 20 / 1,152
All system components are mounted in either a standard Hitachi Data
Systems 19-inch, 42U rack, or a customer-supplied rack that meets the rack
specifications listed in this manual.
Note:
The HUS VM is an “open systems” only array. Mainframe systems are
not supported.
The following sections provide descriptions and illustrations of the HUS VM
storage system and its components.
1-2
Introduction
Hitachi Unified Storage VM Block Module Hardware User Guide
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