Red Hat High-Availability Add-On - subscription - 1-2 sockets

Mfg.Part: RH1145289S | CDW Part: 2269689 | UNSPSC: 43232302
Availability: 3-5 days
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$1,343.99 Advertised Price
Advertised Price
Lease Option ($39.65/month) Lease Price Information
Note: Leasing is available to businesses only. Leasing is not available to individuals.
Product Details
  • Subscription
  • 1-2 sockets
  • Linux
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Red Hat High-Availability Add-On - subscription - 1-2 sockets
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Product Overview

Main Features
  • Subscription
  • 1-2 sockets
  • Linux
The High Availability Add-On for Red Hat Enterprise Linux provides continuous availability of services by eliminating single points of failure. By offering failover services between nodes within a cluster, the High Availability Add-On supports high availability for up to 16 nodes.
The High Availability Add-On also enables failover for off-the-shelf applications such as Apache, MySQL, and PostgreSQL, any of which can be coupled with resources like IP address and single-node file systems to form highly available services. The High Availability Add-On can also be easily extended to any user-specified application that is controlled by an init script per UNIX System V (SysV) standards.
When using the High Availability Add-On, a highly available service can fail over from one node to another with no apparent interruption to cluster clients. The High Availability Add-On also ensures absolute data integrity when one cluster node takes over control of a service from another cluster node. It achieves this by promptly evicting nodes from the cluster that are deemed to be faulty using a method called "fencing" that prevents data corruption. The High Availability Add-On supports several types of fencing, including both power- and storage area network (SAN) -based fencing.

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