LSI MegaRAID(R) 6 Gb/s SAS RAID Controllers 25083 사용자 설명서
1-12
Overview
Copyright © 2009 by LSI Corporation. All rights reserved.
* - Can support up to 64 devices, but only 16 can be used in a RAID
configuration.
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.
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.
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
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
controller
16*
16*
32
32
32
240
240
Maximum hot spares
per controller
per controller
8
8
32
32
32
240
240
Maximum spans per
virtual drive
virtual drive
8
8
8
8
8
8
8
Maximum enclosures
per port**
per port**
2
2
2
2
2
10
10
Number of ports
1
2
1
2
2
2
2
Table 1.1
SAS RAID Controller Array Limitations
Specification
SA
S 9240
-4i
SA
S 9240
-8i
SA
S 9260
-4i
SA
S 9260
-8i
SA
S 9261
-8i
SA
S 9280
4i/4
e
SA
S 9280
-8e