2
Intel
®
Raid Controller SRCU41L User Manual
Overview
The Intel
®
Raid Controller SRCU41L supports a low-voltage differential (LVD) or a single-ended
(SE) SCSI bus. With LVD, you can use cables up to 12 meters long. Throughput on each SCSI
channel can be as high as 320 Mbps.
PCI is an I/O architectures. It is designed to increase data transfers without slowing down the
central processing unit (CPU). You can install the Intel
®
SRCU41L Raid Controller storage adapter
in PCI computer systems with a standard bracket type. With these adapters in your system, you can
connect SCSI devices over a SCSI bus.
Note:
For Ultra320 SCSI performance, you must connect only LVD devices to the bus. Do not mix SE
with LVD devices, or the bus speed will be limited to the slower SE (Ultra SCSI) SCSI data
transfer rates. Do not connect a high voltage differential (HVD) device to the controller.
1.1.1
Operating System Support
The Intel
®
Raid Controller SRCU41L supports major operating systems, such as Windows (2000,
Server 2003, and XP), Red Hat* Linux, SuSe Linux, Novell* NetWare, SCO* OpenServer, and
UnixWare*. Other software support ensures data integrity by intelligently testing the network
before completing negotiation.
Figure 1. Intel
®
Raid Controller SRCU41L Block Diagram
Intel
®
I/O Processor
80302
Intel
®
RAID Controller SRCU41L
1-Channel Low Profile PCI RAID
Single LVD/SE
SCSI Channel
(LSI53C1020)
PCI Edge Connector
XA Bus
Latches
Cache
SDRAM
Backup
Battery
Registers
Miscellaneous
Port
Serial
ROM
Flash
NSVRAM
32K x 8
1 or 2 MByte
XA/XD Bus
XA/XD Bus
XA/XD Bus
XA/XD Bus
XD Bus
XA Bus
RAD BUS
Secondary PCI Bus
XA
/X
D
B
u
s
H
o
st
PC
I Bu
s
Logic
Decode
8-Bit
8-Bit
8-Bit
17-Bit
64-Bit
66 MHz
Data
Address/
SDRAM
66 MHz
64-Bit/
66 M
H
z
64
-Bi
t/
