Glossary

Checksum

A checksum is a simple type of redundancy check that is used to protect the integrity of data by detecting errors. Checksum is a calculated value of stored or transmitted data. When the data is retrieved from storage or received at the other end of a transmittal, a new checksum value is then computed and compared against the existing checksum value. A non-match indicates an error.

Client

A Client is one that is deployed on one or more machines/servers and will communicate either to a specified staging server or to the Arcserve server.

Critical Patch

A Critical Patch is a fix for high-impact or wide-spread problems. A Critical Patch is a software correction that is critical to the operation of the product in most environments. It is identical to Hyper-Patch in most cases.

Cumulative Patch

A Cumulative Patch is a means for delivering a group of individual patches that affect multiple product elements or components that are integrated and published into one patch and then applied to an existing environment. Cumulative Patches are included in and superseded by the next applicable Cumulative Patch or Service Pack.

Device Patch

A Device Patch is a fix that is released to support new devices used with Arcserve Backup.

Easy Update

Easy Update is the configuration section in the Patch Manager that allows you to automate the patch download and install process for all critical patches published by Arcserve.

Individual Patch

An Individual Patch is a fix for a confirmed problem and addresses only the product defect that was addressed in the original confirmed test patch. Individual Patches are included in and superseded by the next applicable Cumulative Patch or Service Pack.

Patch

A patch is a small set of files created to fix or enhance the functionality or security of a product.

Prerequisite Patch

A Prerequisite Patch is a fix which needs to be applied before another patch can be applied. For example, if Patch A is a Prerequisite Patch for Patch B, then Patch A must be installed before you can install Patch B.

Published Patch

A Published Patch (or published fix) is a classification for a patch that has been confirmed to correct a reported product defect or problem and is generally available to all users. Only Published Patches (not Test Fixes) are displayed in the Patch Updates pane. Published Patches can be downloaded from the Arcserve Technical Support.

Security Patch

A Security Patch is a fix that resolves a critical security vulnerability issue reported for a product.

Service Pack

A Service Pack is a means for delivering a product maintenance update and consists of an accumulation of patches from the last official product release to a more recent point in time. A Service Pack supersedes all previously issued patches and Service Packs.

Staging Server

A Staging Server is used as a temporary storage location for patch downloads before they are installed into Arcserve Backup clients. A Staging Server provides you with the ability to configure a server that can connect to the Arcserve server to download patches locally. All other machines/servers that do not have access to the internet or do not want to connect directly to the Arcserve server can connect to the locally configured staging server to download patches. The staging server is a local repository for all Clients that require patches and provides Clients with the ability to get patches quickly and safely by attaching to a locally configured server.

Superseded Patch

A Superseded Patch is a fix which replaces another patch with a newer version.

Test Patch

A Test Patch (or test fix) is a classification for a patch that has been confirmed to correct a reported product defect or problem. The distribution from Arcserve Technical Support is limited to the users who reported the problem and is not generally available to all existing users. Test Patches are not displayed on the Patch Updates pane of the Patch Manager GUI. If necessary, contact Arcserve Technical Support to obtain a Test Patch.