IBM ServeRAID M5014 User Manual

Benefits of the ServeRAID M5014 and ServeRAID M5015 Controllers 1-11
1.6.2 SAS Array Limitations
This section describes the array limitations of the controllers. 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.
Tab l e 1 . 2 lists the array limitations for the ServeRAID M5014 and
ServeRAID M5015 controllers.
Note:
The maximum number of hot spares per array is equal to
the maximum number of physical drives per array.
The controller supports 64-bit logical block addressing (LBA), which
makes it possible to connect a large number of drives to the RAID
controller, directly and through expanders. However, the actual number
of drives that you can attach depends on the limits listed in Table 1.2
rather than by the actual RAID volume capacity.
The maximum numbers in Table 1.2 depend on how many physical
devices you have connected to the controller. For example, though you
can have up to 32 disks per array, and up to 64 arrays per controller, a
limit of 64 disks per controller exists.
Table 1.2 ServeRAID M5014/M5015 SAS/SATA Controller Array
Limitations
Specification
ServeRAID
M5014/M5015
SAS/SATA Controllers
Maximum number of disks per controller 64
Maximum number of arrays per controller 64
Maximum number of virtual disks per array 16
Maximum number of physical devices per array 32
Maximum number of physical devices per controller 32
Maximum number of hot spares per array 32
Maximum number of spans per virtual disk 8
Maximum number of ports 2
Maximum number of enclosures per port N/A

IBM ServeRAID M5014 Specifications

General

Brand	IBM
Model	ServeRAID M5014
Category	Controller
Language	English