filer
Glossary-5
attach point
A filename in the /dev file system on UNIX or Linux that represents a hardware tape
device. A attach point does not specify data on disk, but identifies a hardware unit
and the device driver that handles it. The inode of the file contains the device number,
permissions, and ownership data. An attachment consists of a host name and the
attach point name by which that device is accessed by Oracle Secure Backup.
differential incremental backup
A type of incremental backup in which Oracle Secure Backup copies only data that
has changed at the same or lower backup level. This backup is also called a level 10
backup. Oracle Secure Backup does not support the level 10 backup on some
platforms, including Network Attached Storage (NAS) devices such as a Network
Appliance filer.
digital signature
A set of bits computed by an Certification Authority (CA) to signify the validity of
specified data. The algorithm for computing the signature makes it difficult to alter the
data without invalidating the signature.
DMA
See data management application (DMA)
domain
A group of computers and devices on a network that are administered as a unit with
common rules and procedures. Within the internet, domains are defined by the IP
address. All devices sharing a common part of the IP address are said to be in the same
domain.
error rate
The number of recovered write errors divided by the total blocks written, multiplied
by 100.
expiration policy
The means by which Oracle Secure Backup determines how a volume in a media
family expires, that is, when they are eligible to be overwritten. A media family can
either have a content-managed expiration policy or time-managed expiration policy.
Fiber Distributed Data Interface (FDDI)
A set of ANSI protocols for sending digital data over fiber optic cable. FDDI networks
are token-passing networks, and support data rates of up to 100 Mbps. FDDI networks
are typically used as backbones for wide-area networks.
Fibre Channel
A protocol used primarily among devices in a Storage Area Network (SAN).
file-system backup
A backup of files on the file system initiated by Oracle Secure Backup. A file-system
backup is distinct from a Recovery Manager (RMAN) backup made through the
Oracle Secure Backup SBT interface.
filer
A network-attached appliance that is used for data storage.
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