nStor NexStor 4700S Series, Руководство пользователя

Страница: 22 / 110

Chapter 1 - Getting Started
RAID Controller
10
RAID Controller
The NexStor 4700S Series RAID Storage System is designed with one
SCSI-to-Serial ATA RAID Controller. It is the latest generation SCSI-SATA RAID
Controller based on an existing design platform. The controller supports RAID
levels 0, 1, 5, 10, and 50.
The SCSI-SATA RAID Controller is designed for low cost high capacity and high
performance applications. The controller provides simplex (stand-alone)
operations for existing and future SCSI solutions. The controller operates
autonomously.
SCSI-SATA RAID Controller
The RAID Controller has four VHD/CI SCSI port connectors, two connectors for
each independent SCSI bus. This connector scheme allows for many different
cabling options.
The core processor of the controller is an Intel XScale RISC processor running at
600 MHz. The processor has integrated instructions and data caches that allow for
the most frequent instructions to be executed without having to access external
memory. Coupled with our micro kernel, it processes commands and I/O at
extremely high rates.
The controller’s disk drive interface provides independent 1.5 Gb/sec drive
connections. Each host port provides an Ultra320 MB/sec SCSI connections.
RS
-232
DTE
HO
ST C
H 1
HO
ST C
H 0
HO
ST C
H 1
HO
ST C
H
D
R
T
H
1
A
B
K
1
A
P
W
R
H
0
A
B
K
0
A
VHD/CI SCSI
I/O Connectors
RS-232 Service Port
Termination DIP Switch
Status LEDs
Latches
Backup Battery
Located Inside
4700S.book Page 10 Wednesday, April 6, 2005 2:14 PM