Lenovo ServeRAID M5110, User Manual, Page: 27 / 72

1-12 Overview
1.6.1 SAS Features
The following list describes the SAS features of the ServeRAID M5110
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
1.6.2 SAS Array Limitations
This section describes the array limitations of the controller. These
include limitations such as the number of physical disks supported, the
maximum number of disks per controller, and the maximum number of
virtual disks allowed per controller.
Table 1.2 lists the array limitations for the ServeRAID M5110 controller.
Table 1.2 ServeRAID M5110 SAS/SATA Controller Array
Limitations
Specification
ServeRAID M5110
SAS/SATA Controller
Maximum virtual disks per controller 64
Maximum arrays per controller 128
Maximum virtual disks per array 16
Maximum physical devices per array 32
Maximum physical devices per controller 128
Note: Can support up to
64 devices, but only
16 can be used in a
RAID configuration.