1.2
ServeRAID M5120 Controller Descriptions and
Limitations
1.2.1
Controller Limitations
The ServeRAID M5120 SAS/SATA controller is a PCI-Express 3.0, half-
size, half-height RAID controller based on the LSISAS2208 PCI Express-
SAS/SATA I/O Processor chip. The ServeRAID M5120 SAS/SATA
controller controls eight external 6-Gb/s SAS/SATA ports through two
SFF-8088 x4 external mini SAS connectors. The controller is available
with eight PHYs.
The ServeRAID-M5120 controller has the following limitations:
•
You can connect only one device per SAS PHY unless you use an
expander
•
You can use a maximum cable length of six feet (using shorter
cables is preferred)
•
Cables have to meet the SAS specification
•
You cannot mix SAS drives and SATA drives in the same virtual disk
•
You cannot mix SAS or SATA Solid State Drives (SSDs) and legacy
mechanical drives (SAS or SATA) in the same virtual disk
•
You cannot mix Solid State SAS drives and Solid State SATA drives
in the same virtual disk
•
See
Section 3.3.4, "Power Supply Requirements for the ServeRAID
M5120 SAS/SATA Controller,"
requirements, and
Conditions"
for information about the minimum and the maximum
temperature ranges
ServeRAID M5120 Controller Descriptions and Limitations
for information about the power
Section 3.3.5, "Operating and Non-operating
1-3