User`s guide

B – Glossary
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Failover path The failover path software feature ensures data
availability and system reliability by assigning alternate
path and automatic adapter failover for device
resources. This feature is available only in
Windows NT/2000, Novell NetWare, and Red Hat
Linux.
Flash BIOS A QLA2xxx adapter’s flash PROM contains the code
that allows booting from the adapter at startup.
HBA Host bus adapter. See Adapter.
IOCB IOCB stands for I/O control block. An IOCB is a
command structure in QLogic ISP architecture.
JBOD JBOD stands for just a bunch of disks.
LIP LIP stands for loop initialization process. LIP is the
initialization process in an arbitrated loop that occurs
when the loop is powered up or a new device is added.
One function of a LIP is to assign addresses. All data
transmission on the loop is suspended during a LIP.
Load balancing Load balancing is a software feature that improves
system performance by balancing device access
between multiple QLA2xxx adapters for maximum
resource efficiency. This feature is available in
Windows NT/2000, Novell NetWare, and Red Hat
Linux.
Loopback Loopback is a diagnostic tool where data is transmitted
and received by the QLA2xxx adapter.
LUN LUN stands for logical unit number, the small integer
handle that identifies a portion of disk storage. A LUN
can consist of a single physical disk or many physical
disks. A physical disk can be broken into multiple LUNs.
LUN masking LUN masking is a software feature that assigns LUNs
to specific servers or hides LUNs from specific servers
for maximum access and availability control.