Glossary
Glossary–8 UltraSCSI RAID Enclosure
host
The primary or controlling computer (in a multiple computer network) to
which storage is attached.
host adapter
A device that connects the host system I/O bus (for example, a PCI bus) to
the storage SCSI bus. A host adapter performs the lower layers of the SCSI
protocol and normally operates in the initiator role.
host computer
See host.
host controller
A device that connects the host system I/O bus (for example, a PCI bus) to
the storage SCSI bus. A host controller provides RAID functionality,
typically has multiple SCSI bus ports, performs the lower layers of the SCSI
protocol, and normally operates in the initiator role.
host port adapter
A host controller device that adapts the host system I/O bus to the array
controller SCSI bus configuration.
hot swap
A method of device replacement whereby the complete system remains
on-line and active during device removal or insertion. The device being
removed or inserted is the only device that cannot perform operations
during this process.
See also cold swap and warm swap.
HSOF
Hierarchical Storage Operating Firmware. HS-family controller software
contained on a removable ROM card (PCMCIA).
I/O module
A SCSI enclosure or SBB shelf device that integrates a single-ended SCSI
bus with either an 8–bit single-ended, 16–bit single-ended, or 16–bit
differential SCSI bus. This module is also a SCSI bus extender,
See also shelf I/O Module.
Summary of Contents for StorageWorks UltraSCSI DS-BA370 Series
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