Avago Technologies Cache Protection for RAID Controller Cards - Manual (Page 20)

LSI Corporation
- 20 -
12Gb/s MegaRAID SAS RAID Controllers User Guide
April 2014
Chapter 2: MegaRAID SAS Hardware Installation
SAS Device Cables and Connectors
Figure 4 Internal SAS Cable for Connection to SAS Drives, SATA II Drives, or SATA III Drives
The following figure shows the SATA III device plug connector that connects a SAS RAID controller with internal
connectors to the host receptacle connector on a backplane. A SATA III connector consists of a signal connector and a
power connector.
Figure 5 SATA III Connectors
The following figure shows SAS connectors and SATA connectors on SAS drives and SATA drives, respectively. Cables
connect internal connectors on the RAID controllers to connectors on SAS drives, SATA drives, or both. Both SAS drives
and SATA drives can connect to SAS backplane receptacle connectors. The difference between the SAS connector and
the SATA connector is the bridge between the SAS primary physical link and the power connector on the SAS
controller, which the SATA connector does not have.
NOTE SAS backplane connectors accept SAS drives or SATA drives, but SATA
backplane connectors cannot accept SAS drives.
Flash ROM/ SAS
PCI Express
RAID Controller
SAS/SATA III Device
Peripheral Bus
NVSRAM
I 2 C
SAS/SATA III Device
SAS/SATA III Device
SAS/SATA III Device
PCI Express Interface
I 2 C
Interface
Device Plug
Connector
Host Receptacle
Connector
Serial ATA
Signal Connector
(pin 1)
Serial ATA
Power Connector
(pin 1)