LSI MegaRAID(R) 6 Gb/s SAS RAID Controllers 25083 User Manual

 

* - Can support up to 64 devices, but only 16 can be used in a RAID 
configuration.

** - Assumes one Storage Enclosure Processor (SEP) per enclosure.

The maximum numbers in 

 depend on how many physical 

devices you have connected to the RAID controller. For example, the 
maximum number of drive groups is equal to the number of drives 
supported by the controller. Thus, for the SAS 9240-4i RAID controller, 
the maximum number of drive groups per controller is eight, which is 
based on the maximum number of physical devices that can be 
connected. In addition, the maximum number of hot spares per controller 
is equal to the maximum number of drives per controller. 

Although you can have up to 16 virtual drives per drive group and up to 
16 drive groups per controller (depending on the controller), there is a 
limit of 64 virtual drives per controller. 

These RAID controllers support 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 actual RAID volume capacity.

Maximum drives per 
controller

16*

16*

32

32

32

240

240

Maximum hot spares 
per controller

8

8

32

32

32

240

240

Maximum spans per 
virtual drive

8

8

8

8

8

8

8

Maximum enclosures 
per port**

2

2

2

2

2

10

10

Number  of  ports

1

2

1

2

2

2

2