Connecting Storage Enclosures To The Ds3500; Maximum Number Of Exp3512 And; Firmware Level 7.77.Xx.xx And Later; Maximum Number Of Exp3512 And Exp3524 Storage Enclosures With Controller - IBM DS3500 Installation, User's, And Maintenance Manual

Connecting storage enclosures to the DS3500

The DS3500 supports the attachment of either the EXP3512 or EXP3524 storage enclosure. The DS3500
supports a total of 192 drives (with controller firmware 7.77.xx.xx and later) or 96 drives (with controller
firmware 7.75.xx.xx and earlier), with the purchase of an optional Storage Partition Premium Feature
upgrade.
The total number of storage enclosures supported varies depending on the model of DS3500 storage
subsystem and EXP3500 storage enclosure. See the following tables Table 3-1 and Table 3-2.
Note: The DS3500 ships with four storage partitions by default. For additional storage partitions,
purchase an optional Storage Partition Premium Feature upgrade. Contact your IBM reseller or marketing
representative for more information.
Table 3-1 shows the maximum number of EXP3512 and EXP3524 storage enclosures that can be attached
to either a DS3512 or a DS3524 storage subsystem and not exceed the 192 total disk drives with controller
firmware level 7.77.xx.xx and later. Any combination of EXP3512 or EXP3524 storage enclosures can be
attached to a DS3512 or a DS3524 as long as the total number of disk drives does not exceed 192 disk
drives.
Table 3-1. Maximum number of EXP3512 and EXP3524 storage enclosures with controller firmware level 7.77.xx.xx
and later
Storage Quantity
enclosures
EXP3512 15
EXP3524 0
or
EXP3512 11
EXP3524 2
or
EXP3512 7
EXP3524 4
or
EXP3512 3
EXP3524 6
Table 3-2 shows the maximum number of EXP3512 and EXP3524 storage enclosures that can be attached
to either a DS3512 or a DS3524 storage subsystem and not exceed the 96 total disk drives with controller
firmware level 7.75.xx.xx and earlier. Any combination of EXP3512 or EXP3524 storage enclosures can be
attached to a DS3512 or a DS3524 as long as the total number of disk drives does not exceed 96 disk
drives.
Table 3-2. Maximum number of EXP3512 and EXP3524 storage enclosures with controller firmware level 7.75.xx.xx
and earlier
Storage Quantity
enclosures
EXP3512 7 5
EXP3524 0 1
DS3512
14 13 12
0 1 1
10 9 8
2 3 3
6 5 4
4 5 5
2 1
6 7
DS3512
3 1
2 3
Storage
enclosures
EXP3524
EXP3512
or
EXP3524
EXP3512
Storage Quantity
enclosures
EXP3524 3
EXP3512 0
Chapter 3. Cabling the storage subsystem and storage enclosure
DS3524
Quantity
7 6 5
0 2 5
3 2 1
8 10 12
2 1
2 4
4
6
0
6
3-19