LSI MegaRAID(R) 6 Gb/s SAS RAID Controllers 25083 User Manual
Summary of SAS RAID Controller Characteristics
1-11
Copyright © 2009 by LSI Corporation. All rights reserved.
•
Supports STP to enable communication with a SATA II device
through an attached expander
through an attached expander
•
Provides a serial, point-to-point, enterprise-level storage interface
•
Simplifies cabling between devices
•
Provides a scalable interface that supports up to 240 devices through
the use of expanders
the use of expanders
Note:
The number of devices varies depending on the MegaRAID
product. Check the LSI web site (
product. Check the LSI web site (
) for
specific details about your product.
•
Supports wide ports consisting of 2, 3, or 4 PHYs within a single
quad port
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 MegaRAID 6Gb/s SAS
RAID controllers. These limitations include the number of drives
supported per controller, the maximum number of drives per controller,
and the maximum number of virtual drives allowed per controller.
RAID controllers. These limitations include the number of drives
supported per controller, the maximum number of drives per controller,
and the maximum number of virtual drives allowed per controller.
lists the array limitations for the 6Gb/s SAS RAID controllers.
Table 1.1
SAS RAID Controller Array Limitations
Specification
SAS 92
40-4i
SAS 92
40-8i
SAS 92
60-4i
SAS 92
60-8i
SAS 92
61-8i
SAS 92
80 4
i/4e
SAS 92
80-8e
Maximum virtual
drives per controller
drives per controller
16
16
64
64
64
64
64
Maximum drive groups
per controller
per controller
8
8
16
16
16
16
16
Maximum virtual
drives per drive group
drives per drive group
16
16
16
16
16
16
16
Maximum drives per
drive group
drive group
16
16
32
32
32
32
32