Sas Features - Lenovo ServeRAID M1115 User Manual

1.8.1

SAS Features

1-10
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Two internal connectors
•
Support for RAID levels 0, 1, 5, 10, and 50 in Integrated MegaRAID
mode (RAID 5 and 50 are supported with an optional upgrade key)
•
Advanced array configuration and management utilities
•
Online RAID level migration
•
Drive migration
•
Drive roaming
•
Media scan
•
No reboot necessary after expansion
•
More than 200 Qtags per array
•
User-specified rebuild rate
•
32-Kbyte nonvolatile random access memory (NVRAM) for storing
RAID system configuration information; the MegaRAID SAS firmware
is stored in flash ROM for easy upgrade.
The following list describes the SAS features of the ServeRAID-M1115
controller:
•
Provides eight fully independent PHYs
•
Supports 6.0 Gb/s SAS data transfers per PHY
•
Supports SSP to enable communication with other SAS devices
•
Supports SMP to communicate topology management information
•
Provides a serial, point-to-point, enterprise-level storage interface
•
Simplifies cabling between devices
•
Supports wide ports consisting of 2, 3, or 4 PHYs within a single
quad port
•
Supports narrow ports consisting of a single PHY
•
Transfers data using SCSI information units
Overview