HP 2000SA G2-Modular-Smart-Array - Manual (Page 22)

22 Installing the enclosures
Connecting controller and drive enclosures
Connecting controller and MSA2000 3.5" 12-drive enclosures
You can connect up to four MSA2000 3.5" 12-drive enclosures to a 2312sa G2 and up to three MSA2000
3.5" 12-drive enclosures to a 2324sa G2. The cabling diagrams shown in this section show the
recommended fault-tolerant cabling patterns. Connecting an MSA2000 3.5" 12-drive enclosure to a
2312sa G2 or 2324sa G2 requires mini-SAS to SAS cables.
IMPORTANT: Adding a fourth drive enclosure to a 2312sa G2 may require a separate, longer cable. For
a current list of supported cables, check the MSA2000 G2 QuickSpecs located on the HP MSA products
page at http://www.hp.com/go/msa . Select MSA SAN Arrays, and then select your product. The
QuickSpecs link is located on the right.
When connecting multiple drive enclosures, use reverse cabling to ensure the highest level of fault
tolerance. Controllers and I/O (expansion) modules are identified by
<enclosure-ID><controller-ID>
. For example, Figure 3 on page 24 shows controller 1A
connected to I/O module 2A, and the chain of connections continuing down. Controller 1B is connected
to the lower module (B) of the last drive enclosure in the chain, with connections moving in the opposite
direction.
Connecting controller and MSA70 2.5” 25-drive enclosures
The 2324sa G2 can also be attached to an MSA70 running firmware version 2.18 or later. For information
about the MSA70, including detailed steps to upgrade the firmware, see the HP StorageWorks 70 Modular
Smart Array Enclosure User Guide located on the MSA2000 Software Support/Documentation CD
shipped with your product, or at http://hp.com/support/manuals .
Connecting controller and mixed-connect 3.5” and 2.5” drive enclosures
You can connect LFF MSA2000 3.5" 12-drive enclosures and SFF MSA70 2.5” 25-drive enclosures to a
2324sa G2 controller enclosure in mixed-connect fashion, as shown in Figure 6 on page 26, and as
further described in the following documents:
• HP StorageWorks MSA2000 G2 Installation Instructions
• HP StorageWorks 2000 G2 Modular Smart Array Cable Configuration Guide
These documents also address connection of the controller enclosure to either LFF or SFF drive enclosures.
A few sample connection diagrams are provided in Figures 1-5 on the following pages.
Additional cable requirements for drive enclosures
IMPORTANT:
•
When installing SAS cables, only use supported SAS 4x cables with 3Gb connectors.
• SAS to SAS 0.6m cables are provided for the MSA2000 3.5" 12-drive enclosure (one per controller).
• Mini-SAS to mini-SAS 0.5m cables are provided with the MSA70 drive enclosure (one per controller).
• The maximum cable length allowed in any configuration is 2m.
• If additional or longer cables are required, they must be ordered separately (see MSA2000 G2 Quick
Specs).
• When expanding storage capacity, a maximum of five enclosures —including the array enclosure— or
ninety-nine (99) disk drives are allowed in the array.
2312sa G2 and 2324sa G2 cable requirements
The table below provides SAS cable requirements for connection combinations between MSA controllers
and drive enclosures.