Avago Technologies MegaRAID SAS 9240-4i - Manual (Page 9)

LSI Corporation
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6Gb/s MegaRAID SAS RAID Controllers User Guide
August 2013
Overview
Configuration Scenarios
1.3.9 MegaRAID SAS 9285 RAID Controllers
 The 6Gb/s MegaRAID SAS 9285-8e PCIe 2.0 Low-Profile Serial-Attached SCSI/SATA Disk Array Controller
controls eight external SAS/SATA ports through two SFF-8088 x4 external mini SAS connectors.
 The 6Gb/s MegaRAID SAS 9285CV-8e PCIe 2.0 Low-Profile Serial-Attached SCSI/SATA Disk Array Controller
controls eight external SAS/SATA ports through two SFF-8088 x4 external mini SAS connectors, and it has
an onboard Cache Vault Flash Module 03 (CVFM03) that connects to a remote Cache Vault Power
Module 02 (CVPM02).
1.3.10 MegaRAID SAS 9286 RAID Controllers
 The 6Gb/s MegaRAID SAS 9286-8e PCIe 3.0 Low-Profile Serial-Attached SCSI/SATA Disk Array Controller
controls eight external SAS/SATA ports through two SFF-8088 x4 external mini SAS connectors.
 The 6Gb/s MegaRAID SAS 9286CV-8e PCIe 3.0 Low-Profile Serial-Attached SCSI/SATA Disk Array Controller
controls eight internal SAS/SATA ports through two SFF-8088 x4 mini external SAS connectors. This RAID
controller supports the CVFM03 module, which connects to a remote Cache Vault Power Module 02.
 The 6Gb/s MegaRAID SAS 9286CV-8eCC PCIe 3.0 Low-Profile Serial-Attached SCSI/SATA Disk Array Controller
controls eight internal SAS/SATA ports through two SFF-8088 x4 mini external SAS connectors. This RAID
controller supports the CVFM03 module, which connects to a remote Cache Vault Power Module 02. In addition,
this controller supports CacheCade Pro 2.0 and Fast Path software enabled out of the box, which optimize
application performance in direct-attached storage environments configured with solid-state drives (SSDs).
1.4 Configuration Scenarios
You can use the MegaRAID SAS RAID controllers in three main scenarios:
 Low-end, internal SATA configuration: In this configuration, use the RAID controller as a high-end SATA, SATA II,
or SATA III compatible controller that connects up to eight drives either directly or through a port expander. This
configuration is mostly for low-end or entry servers. An out-of-band I
2
C bus provides enclosure management.
Side bands of both types of internal SAS connectors support the SFF-8485 (SGPIO) interface.
 Midrange internal SAS configuration: This configuration is like an internal SATA configuration, but with
high-end SAS drives. This configuration is more suitable for low-range to midrange servers.
 High-end external SAS/SATA configuration: This configuration is for external connectivity using SATA drives,
SATA II drives, SATA III drives, SAS drives, or combinations of SATA and SAS drives. External enclosure management
is supported through in-band, SCSI-enclosed storage. The configuration must support STP and SMP.
The following figure shows a direct-connect configuration. The Inter-IC (I
2
C) interface communicates with peripherals.
The external memory bus provides a 32-bit memory bus, parity checking, and chip select signals for pipelined
synchronous burst static random access memory (PSBRAM), nonvolatile static random access memory (NVSRAM), and
Flash ROM.