Storage Devices
UltraSCSI RAID Enclosure 7–9
The SBB Connector
The StorageWorks SBB connectors ensure that the SBBs will operate
reliably even when replaced many times.
The SBB has a 96-pin receptacle DIN connector that provides positive
mating with the SBB enclosure plug connectors. The connector design
ensures that:
1. DC power is present until after the SCSI bus connection is broken.
2. DC power is present before the SCSI bus connection is made.
This feature protects the integrity of the SCSI data bus and avoids
introducing noise on the bus that could either distort data or cause the bus to
“hang.”
The SBB connector is a simple, highly reliable mechanism that can support
200 SBB replacement cycles. A replacement cycle consists of removing and
replacing an SBB. Over the active product life of 5 years, this is the
equivalent of 40 replacement cycles per year, or approximately 1 cycle
every 9 days. The replacement cycle limit applies equally to enclosure
connectors and device connectors.
Replacing the SBB more often than the recommended cycle, the gold
contact coating will wear away and destroy the integrity of the connection.
This product does not support environments that require a greater number of
replacement cycles and this is considered improper treatment or use
(paragraph 9.4b of U.S. Standard Terms and Conditions). Products or
connectors damaged because of a higher number of replacement cycles are
not eligible for return under warranty and standard service plans. DIGITAL
Equipment Corporation markets a specific family of removable storage
elements for higher replacement cycle environments. Contact your
DIGITAL Account Representative for more information.
Summary of Contents for StorageWorks UltraSCSI DS-BA370 Series
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