HARDWARE INSTALLATION
21
2.4 SAS Cables
You can connect the end devices to each other through direct
cables or through the SAS expander/backplane connections. The
6Gb/s SAS RAID controller supports daisy-chain expansion up to 8
enclosures. The following is an example of some internal SAS/SATA
cables and an external SAS cable.
2.4.1 Internal Min SAS 4i to SATA Cable
The Min SAS 4i to SATA cables are used for connection between
the 6Gb/s SAS RAID controller internal connectors and connectors
on the SAS/SATA disk drives or SAS/SATA connector backplane.
The ARC-1215-4i/1225-8i has 1/2 Min SAS 4i (SFF-8087) internal
connectors, each of them can support up to four SAS/SATA drives.
These controllers can be installed in a server RAID enclosure
with standard SATA connectors backplane. The following diagram
shows the picture of Min SAS 4i to 4*SATA cables. Backplane
supports SGPIO header can leverage the SGPIO function on the
6Gb/s SAS RAID controller through the sideband cable.
The SFF-8448 sideband signals cable is reserved for the back-
plane with header on it.
Figure 2-6, Internal Min SAS 4i to 4x SATA cable
