7914DS3KIntro_081410alw.fm
Draft Document for Review March 28, 2011 12:24 pm
18
IBM System Storage DS3500: Introduction and Implementation Guide
Figure 2-9 Controller module with optional FC host interface daughter card
Disk drives
The most important difference between the DS3512 and the DS3524 product models and
their equivalent expansion models are the hard disk that are supported with them. The
difference starts with the physical drive size and extends to their speeds and storage
capacities. The DS3512 and EXP3512 support twelve drive in the 3.5 inch format; the
DS3524 and EXP3524 supports twenty four drive in the 2.5 inch format. The disk drives are
installed at the front, as shown above in Figure 2-2 on page 15 and Figure 2-3 on page 15.
Available drive types for each of these subsystems are shown below in Table 2-1.
Table 2-1 DS3500 families HDD support
2.3 EXP3512 and EXP3524
The EXP3512 and EXP3524 expansion subsystems allow for the growth of the DS3500
storage subsystem up to the 96 drive maximum, by adding either the twelve or twenty four
drive chassis to the storage server’s SAS drive expansion port. Any mix of the expansion
models can be added up to the maximum allowed drive count. The EXP3512 and EXP3524
differ from the DS3512 and DS3524 in that in place of the controller module they are
equipped with an Environmental Services Module (ESM). As with the DS3500 controllers the
Note: Only one type of optional interface can be added to any one DS3500 storage server.
Mixing interface daughter cards between controllers in the same DS3500 is not supported.
Drives Supported
DS3512/EXP3512 DS3524/EXP3524
SAS 15KRPM
300GB, 450GB,
600GB
73GB, 146GB
SAS 15KRPM SED
600GB
None
SAS 10KRPM
None
300GB
SAS 10KRPM SED
None
300GB
Nearline SAS
7.5KRPM
1TB, 2TB
500GB
Maximum drives
12/96
24/96
Storage system
capacity (max)
450 GB SAS / 1 TB
SATA
450 GB SAS / 1 TB
SATA
Note: In DS3500 family, you can add a mix of EXP3512 or EXP3524 expansion units to
attain a maximum capacity of 190TB per subsystem.
Summary of Contents for DS3500
Page 2: ......
Page 5: ...iii Draft Document for Review March 28 2011 12 24 pm 7914edno fm ...
Page 789: ......
