SAS cables
The StoreOnce implementation uses Managed Cables, making it easier to identify faults. The StoreOnce
software verifies that the correct length SAS cables are being used. Mini-SAS HD connectors are used
throughout.
When performing maintenance activities that affect SAS cabling, check that cables are still securely
connected as shown in the diagrams in the next section.
SAS cables should ‘click’ and lock into position when correctly inserted. Three cable lengths are available.
The maximum supported cable length is 2 m.
Table 7: Supported SAS cables
Description Part Number Location for use
0.5 m Mini-HD SAS to Mini-HD SAS cable 717431-001 Between drawers of a disk enclosure
1.0 m Mini-HD SAS to Mini-HD SAS cable 717432-001 Between disk enclosures or between the
system node and the disk enclosure
2.0 m Mini-HD SAS to Mini-HD SAS cable 717433-001 Between the system node and the disk
enclosure when the disk enclosure
positioning is longer than the 1.0 m cable
reach. Not for interconnection between
disk enclosures.
NOTE:
Both 1.0 m and 2.0 m cable lengths are supported when connecting the server to the disk enclosure. To
facilitate future expansion, HPE recommends using a 2.0 m SAS cable to connect from the server to
Drawer 2 of the disk enclosure.
SAS cabling when storage is fully expanded
Two installation scenarios are recommended for customers who self-install the StoreOnce 5500 System into
their own racks. These scenarios are fully documented in the StoreOnce 5500 System Capacity Upgrade
Guide.
• Two enclosures above and two enclosures below the server
• Four enclosures below the server.
IMPORTANT:
The StoreOnce 5500 System uses HPE Managed cables. If you choose not to follow one of the
recommended configurations, your system may experience errors with the StoreOnce SAS check
function that checks SAS cable integrity.
Factory-integrated SAS cabling configuration
There is a third option, the factory-integrated option where the customer orders a system that is prebuilt by
HPE into a rack. This installation has specific shipping requirements to keep the mass of the rack as low as
possible while in transit. The server is at the lowest level and the four enclosures are installed above the
server. HPE does not anticipate the customer altering the layout of the factory–integrated option.
SAS cables 33
To Next Page
Loading...
