Sas Array Limitations; Serveraid M1115 Sas/Sata Controller Array Limitations - Lenovo ServeRAID M1115 User Manual

1.8.2

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-M1115 controller.
Table 1.2 ServeRAID M1115 SAS/SATA Controller Array
Limitations
Specification
Maximum virtual disks per controller
Maximum arrays per controller
Maximum virtual disks per array
Maximum physical devices per array
Maximum physical devices per controller
Maximum hot spares per controller
Maximum spans per virtual disk
Maximum ports
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
rather than by the actual RAID volume capacity.
The maximum numbers in
devices you have connected to the controller. For example, the maximum
number of arrays per controller is equal to the number of physical disks
supported by the controller up to the limit of 16 arrays per controller. In
addition, though you can have up to 16 virtual disks per array, and up to
16 arrays per controller, there is a limit of 16 virtual disks per controller.
Benefits of the ServeRAID M1115 Controller
ServeRAID M1115
SAS/SATA Controller
Note: Can support up to
64 devices, but only
16 can be used in a
RAID configuration.
Table 1.2 depend on how many physical
16
16
16
16
16
8
8
2
Table 1.2
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