Instruction Manual

170 Glossary
Replacement Unit
A component or collection of components in a system or subsystem that is
always replaced as a unit when any part of the collection fails. Typical
replacement units in a disk subsystem include disks, controller logic boards,
power supplies and cables.
Revertible Hot Spare
In the case of a Revertible Hot Spare, when you use the Replace Member
procedure, after data is copied from a hot spare to a new physical disk, the hot
spare reverts from a rebuild disk to its original hot spare status.
RPM
Red Hat Package Manager. RPM is a software manager used to install, remove,
query, and verify the software on your system. RPMs are used in the driver
update procedures for Red Hat Enterprise Linux and SUSE Linux Enterprise
Server (SLES).
S
SAS
Serial Attached SCSI. SAS is a serial, point-to-point, enterprise-level device
interface that leverages the proven Small Computer System Interface (SCSI)
protocol set. The SAS interface provides improved performance, simplified
cabling, smaller connectors, lower pin count, and lower power requirements
when compared to parallel SCSI.
SATA
Serial Advanced Technology Attachment. A physical storage interface standard,
is a serial link that provides point-to-point connections between devices.
Secure
The act of creating a security key to control access to encrypted data.
Secured
State of a security-enabled media component indicating that its data is only
accessible using a security key.
PERC7.2_UG.book Page 170 Thursday, March 3, 2011 2:14 PM