HP NetStorage 6000 User Manual
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Glossary
Glossary-7
Physical drive
A term for the hard drives installed in the HP NetStorage 6000. 3 to 10 physical drives
may be installed in the unit. A minimum of 3 drives is required for RAID 5 configuration.
Port Aggregation
Distributing outbound server traffic between two or more NICs providing a wider data
path. This is useful for servers or applications where most of the traffic flows in one
direction from the server to the client. The NICs act as a team that appears as a single
device with one network address.
Primary Domain Controller (PDC)
A server that has been assigned to become the primary authentication server for the
Windows NT domain. It stores a copy of the Security Accounts Manager (SAM) data-
base and uses this database to authenticate users.
R
Redundant Array of Independent Disks (RAID)
RAID is a method of combining several disk drives into a single logical storage unit.
RAID offers the advantage of fault tolerance by providing real-time data recovery when
a disk drive fails, increasing system uptime and network availability. RAID also
increases system performance when multiple drives work together.
Relative Identification (RID) number
The relative ID for an NT user.
S
SCSI
See Small Computer System Interface.
Security Account Manager (SAM) database
A database used to authenticate users.
Server Message Block (SMB) protocol
A network protocol designed and implemented by Microsoft and used by Windows cli-
ents to communicate file access requests to Windows servers. This has been replaced
by CIFS.