Chapter 5.6 Flashcards
snapshot
Copy-based mechanisms are oftentimes unable to back up open files. Snapshots are a means of getting around the problem of open files by using a point-in-time approach.
Incremental backup
An incremental backup is performed after a previous backup, and only data that has been changed since the last backup will be included. This backup type can miss open files if snapshot technology is not being used. multiple backups are set, the # of incrementals plus the full.
differential backup
A differential backup is performed after a previous backup, and only data that has been changed since the last full backup will be included. This backup type can miss open files if snapshot technology is not being used. only 2 backsups are set, the differential and the full.
full backup
A full backup type is used to backup an entire system or target. A full backup can miss open files if snapshot technology is not being used. 1 backup is set, the full.
thin clients
Thin clients are a means of computing with lower powered desktops that rely on higher powered servers to handle the applications.
synchronous replication
Synchronous replication is particularly sensitive to distance. Synchronous (not Asynchronous) replication indicates data must be written at both sites to be considered valid. A slow link will result in longer wait times for data synchronization.
asynchronous replication
Asynchronous replication indicates data is mirrored from a primary site to a secondary site. synchronous replication is not as particularly sensitive to distance as Synchronous due to the one-way synchronization.
human capital
An organization needs to consider “Is someone else available to fulfill the same role if an employee is incapacitated?” An important part of COOP is succession planning, which targets the specific issue of leadership and senior management.
restore order
A complex facility such as a data center or campus network must be reconstituted according to a carefully designed order of restoration. Order of restoration should be thought of as a guideline and not a set of rules. Power should always be configured and tested first. f systems are brought back online in an uncontrolled way, there is the serious risk of causing additional power problems or of causing problems in the network, OS, etc. Due to computer system dependencies, network infrastructure such as switches should be brought online before any computer systems, then critical systems, followed by other systems.
Offsite
Offsite backups are backup sets removed from the facility where the systems reside. These types of backups can also be backups performed from a system to a remote location or cloud storage. An offsite back can be used for redundancy.
imagining
Imaging is used to make a copy of a system or a disk. In this case imaging is not applicable.
cold site
A cold site is an alternate location where a network can be rebuilt after a disaster has occurred. A cold site can take some time to implement, as systems and assets (including data) are not readily configured and available for full use.
warm site
A warm site is a dormant alternate location, or a location that performs noncritical functions under normal conditions, but can be rapidly converted to a main operations site with minimal effort.
hot site
A hot site is a fully configured alternate network that can be quickly brought online after a disaster. With a hot site, systems and data are usually up-to-date.
failover
Failover is not a site, but rather refers to system redundancy. With a failover configuration, an additional device is configured to function when the primary configuration fails.
