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Table 3.3
MegaRAID 320-2X Headers and Connectors (Cont.)
Connector Description
J11
Onboard Cache LED
J12
BBU Daughter Card
J13
SCSI Activity LED
J14
External SCSI Channel 1
Connector
J17
Termination Power Enable
Channel 0
J18
Termination Power Enable
Channel 1
J19
Onboard BIOS Enable
U6
DIMM Socket
3.1.3
Quad-Channel Storage Adapter
The LSI Logic MegaRAID 320-4X is a quad-channel Ultra320 SCSI-to-
PCI-X storage adapter that supports four Ultra320 SCSI Channels. See
Figure 3.4
and headers on the MegaRAID 320-4X storage adapter.
The MegaRAID 320 Storage Adapter Family
Copyright © 2003 by LSI Logic Corporation. All rights reserved.
Type
2-pin header
40-pin header
2-pin header
68-pin connector External very high-density SCSI bus
2-pin header
2-pin header
4-pin header
(two rows of two
pins each)
DIMM socket
and
Table 3.4
for information about the important connectors
Comments
LED glows when the onboard cache
contains data and a write from the
cache to the hard drives is pending.
Connector for an optional back-up
battery pack.
Connector for enclosure LED to
indicate data transfers. Connection
is optional.
connector.
Jumpered: MegaRAID 320-2X
supplies termination power.
No jumper: SCSI bus provides
termination power.
No jumper: BIOS enabled (default)
Jumper on pins 2/4: BIOS disabled
The MegaRAID 320-2X supports the
following sizes of SDRAM: 32, 64,
128, 256, and 512 Mbytes, and
1 Gbyte.
3-7
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