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Galaxy Raid GHDX4 SAS<>SAS/ SATA 12Bay Installation / Hardware Reference Manual
1.
2.
3.1.2
Other Considerations
˙
When selecting the number of hard drives to be included in a
logical configuration, the host channel bandwidth and the
mechanical performance of individual disk disks should be
considered.
It is advisable to calculate performance against the host port
bandwidth when you design an application topology. As shown
below, if all twelve (12) members are included in a logical drive,
this logical drive should be associated with a host ID, and made
available through a host channel. In this case, it will be a good
practice to expand your capacity with drives on one or more
expansion enclosures so that the bandwidth on the two host
ports can be fully exploited.
3-2
CAUTION!
All SAS cables are sensitive and must be handled with care.
To prevent interference within a rack system, the cable
routing paths must be carefully planned and the cables must
not be bent exceeding the specified radius.
When connecting SAS cables, make sure the connectors
are fully inserted and firmly secured to ensure signal quality
over long term use, shock, vibration, or accidental removal
by impact.
Drive Mechanical Speed and Logical Drive Speed
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