Dot Hill Systems 4524 - Connecting the 4004 Series Controller to the 2 U12 Drive Enclosure; Connecting the 4004 Series Controller to the 2 U24 Drive Enclosure; Summary of Drive Enclosures Supported by Controller Enclosures

AssuredSAN 4004 Series Setup Guide 39
AssuredSAN controller enclosures support compatible Dot Hill drive enclosures for adding storage.
Supported enclosure form factors include traditional 2U models (2U12 and 2U24) and high-capacity
models in 2U (2U48) and 4U (4U56) format. A summary overview of drive enclosures supported by
controller enclosures is provided herein.
NOTE: Table 4 provides a comparative tabular view of AssuredSAN drive enclosures supported by
AssuredSAN controller enclosures. For sake of completeness the drive enclosures are shown relative to the
3004 Series and 4004 Series AssuredSAN controller products they support.
1
See https://www.dothill.com for most current information concerning support of drive enclosures for storage expansion.
2
See the website (above) or the Setup Guide for your product model for enclosure maximum configuration limits.
3
Using high-capacity drive enclosures reduces the maximum number of enclosures supported, without materially
affecting the maximum number of disks allowed.
Cabling diagrams in this section show fault-tolerant cabling patterns. Controller and expansion modules
are identified by <enclosure-ID><controller-ID>. When connecting multiple drive enclosures, use
reverse cabling to ensure the highest level of fault tolerance, enabling controllers to access remaining drive
enclosures if a drive enclosure fails.
For example, the illustration on the left in Figure 38 on page 44 shows reverse cabling, wherein
controller 0A (i.e., enclosure-ID = 0; controller-ID = A) is connected to expansion module 1A, with a
chain of connections cascading down (blue). Controller 0B is connected to the lower expansion
module (B) of the last drive enclosure in the chain, with connections moving in the opposite direction
(green). Several cabling examples are provided on the following pages.
Connecting the 4004 Series controller to the 2U12 drive enclosure
The LFF J6G12 12-drive enclosure, supporting 6 Gb internal disk drive and expander link speeds, can be
attached to a 4004 Series controller enclosure using supported mini-SAS to mini-SAS cables of 0.5 m
(1.64') to 2 m (6.56') length (see Figure 34 on page 42).
Connecting the 4004 Series controller to the 2U24 drive enclosure
The SFF J6G24 24-drive enclosure, supporting 6 Gb internal disk drive and expander link speeds, can be
attached to a 4004 Series controller enclosure using supported mini-SAS to mini-SAS cables of 0.5 m
(1.64') to 2 m (6.56') length (see Figure 34 on page 42).
Table 4 Summary of drive enclosures supported by controller enclosures
RAID
Model 3004 Series 4004 Series
Form 2U12 2U24 2U12 2U24 2U48 4U56
Expansion
2 U 12 J 6 G12 J 6 G12 J 6 G 12 J 6 G12 J 6 G12 J 6 G 12
2U24 J6G24 J6G24 J6G24 J6G24 J6G24 J6G24
2U48
J6G48 J6G48 J6G48 J6G48
4U56 J6G56 J6G56 J6G56 J6G56
Chassis
4U56: Chassis (4-rack units high) with 56 LFF (3.5") sledded disk drive modules.
2U48: Chassis (2-rack units high) with 48 SFF (2.5") sledded disk drive modules.
2U24: Chassis (2-rack units high) with 24 SFF (2.5") sledded disk drive modules.
2U12: Chassis (2-rack units high) with 12 LFF (3.5") sledded disk drive modules.
Models
J6G56: 4U56 chassis configured as a 6 Gb drive (expansion) enclosure for adding storage.
J6G48: 2U48 chassis configured as a 6 Gb drive (expansion) enclosure for adding storage.
J6G24: 2U24 chassis configured as a 6 Gb drive (expansion) enclosure for adding storage.
J6G12: 2U12 chassis configured as a 6 Gb drive (expansion) enclosure for adding storage.