Hitachi Universal Storage Platform V User Manual

Architecture and Components 2-3
Hitachi Universal Storage Platform V/VM User and Reference Guide
DKA DKA
CSW CSW
CMA CMA
SMA SMA
Channel Interface
FC
-
AL
(
4 Gb
p
s/
p
ort
)
Cache Path
SM Path
Max. 60
data drives
Disk Unit
Battery
Box
Battery
Box
Controller
Power Supply
Max. 240 data drives per storag e system
Drive Path (max. 8 path s)
AC-DC
Power
Supp ly
In put
Power
AC-DC
Power
Supp ly
AC -DC
Power
Supply
Power Supply
PD B-Bo x
PDU
In put
Power
PD B-Bo x
PDU
AC -DC
Power
Supply
CHA
CHA
CHA
CHA
CHA
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Figure 2-2 Universal Storage Platform VM Hardware Architecture
Multiple Data and Control Paths
The Universal Storage Platform V/VM employs the proven Hi-Star™ crossbar
switch architecture, which uses multiple point-to-point data and command
paths to provide redundancy and improve performance. Each data and
command path is independent. The individual paths between the front-end or
back-end directors and cache are steered by high-speed cache switch cards
(CSWs). The USP V/VM does not have any common buses, thus eliminating
the performance degradation and contention that can occur in bus
architecture. All data stored on the USP V/VM is moved into and out of cache
over the redundant high-speed paths.

Hitachi Universal Storage Platform V Specifications

General

Brand	Hitachi
Model	Universal Storage Platform V
Category	Storage
Language	English