Technical Product Specification

Intel® Server System SR2600UR TPS Peripheral and Hard Drive Subsystem
Revision 1.8 Intel order number E45274-011
59
6.4.1 Passive Midplane
The passive midplane is used as an interconnect, routing drive control signals from either the
on-board SATA ports of the server board or SAS/SATA ports from an add-in card to the hot-
swap backplane. The hard drive controller signals are cabled to the midplane, which then
routes the signals to the hot-swap backplane through two edge connectors that plug directly
into it. For details, see Table 28 and Table 29.
A.
Power Connector
F.
Fan 4 Connector
B. Fan 6 Connector G. Fan 3 Connector
C.
Fan 5 Connector
H.
Fan 1 Connector
D.
SAS/SATA Connectors
I.
Fan 2 Connector
E. Bridge Board Connector J. Backplane Connector
Figure 34. Passive Midplane Board
6.4.2 Active Midplane with SAS/SATA RAID Support
The active midplane is used to provide SAS/SATA RAID support. It has an integrated LSI
LSISAS1078 3 Gb/s RAID On-a-Chip (ROC) device. It provides support for up to six SAS drives
in this system. By default, this midplane option provides software RAID levels 0, 1, and 10 and
utilizes Intel
®
IT/IR RAID . With the installation of optional RAID enablement devices, the
midplane can support hardware RAID levels 0, 1, 5, 6, 10, 50 and 60. The midplane attaches to
the hot-swap backplane by two card edge connectors, which eliminates the need for any hard
drive cables. The following sub-sections describe the board-level SAS/SATA RAID functionality.