# Disaster Recovery **URL:** \ **Category:** Forum\ **Tags:** Adabas-Natural, Adabas, Adabas-Add-on-Products, Adabas-Cluster-Support, Other-Adabas-add-on-products\ **Created:** [September 13, 2012, 2:15pm UTC](https://techcommunity.softwareag.com/t/disaster-recovery/101418 "2012-09-13T14:15:42Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Mathew](https://avatars.discourse-cdn.com/v4/letter/m/5daacb/32.png) [@Mathew](https://techcommunity.softwareag.com/u/Mathew)\ **Post date:** [September 13, 2012, 2:15pm UTC](https://techcommunity.softwareag.com/t/disaster-recovery/101418/1 "2012-09-13T14:15:42Z")
Hello, Need suggestions, comments of what Add-on Tools can be used for Disaster Recovery? We have 2 sites (a) Head Office (b) DR site Have approximately 500 users peak time. At the moment we have one Production DB and PPRC is performed to DR site. Now we are looking for alternative to have almost no time loss. If we need to avoid Single Point of failure, what data-sharing tools would be adviceable to ensure no Data loss, maximum data integrity, availability and database performance to meet ongoing business needs. What do you think about “Adabas Parallel Service” verses “Adabas Cluster Services” ? Other suggestions are most welcome, but we are more focused on a SAG Add on Product to cater for our need. Thanks & Regards Mathew A. ---
**Author:** ![system](https://global.discourse-cdn.com/techcommunity/original/3X/c/d/cd19967bb605d28a72d77eb83a1cae22f3df2eb8.svg) [@system](https://techcommunity.softwareag.com/u/system)\ **Post date:** [September 13, 2012, 2:27pm UTC](https://techcommunity.softwareag.com/t/disaster-recovery/101418/2 "2012-09-13T14:27:42Z")
When talking about Clustering / Parallel services this essentially means having two sites online and active at the same time, sharing / distributing the load, this is not a “DR scenario”. Now, for DR, there are two modes, “cold standby” (you bring up the DR site when needed) and “hot standby” (DR site active and waiting to take over in case of failure (only !)) For a cold standby site one usually just applies backup from the main site in defined intervals, for a hot standby it depends on how current you need your data in case of a switch to the DR site, possible options include applying delta saves to the PLOGs to the database(s) on the DR site, or PLOGs either in intervals or as soon as a PLOG switch occurs, or real-time replication of updates from main to DR (not sure if the latter is easily possible from the licensing point of view, though, I’m not a sales person). ---
**Author:** ![jack\_jacki](https://avatars.discourse-cdn.com/v4/letter/j/77aa72/32.png) [@jack\_jacki](https://techcommunity.softwareag.com/u/jack_jacki)\ **Post date:** [June 6, 2013, 12:17pm UTC](https://techcommunity.softwareag.com/t/disaster-recovery/101418/3 "2013-06-06T12:17:19Z")
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**Author:** ![Brian\_Johnson1](https://sea1.discourse-cdn.com/techcommunity/user_avatar/techcommunity.softwareag.com/brian_johnson1/32/163_2.png) [@Brian\_Johnson1](https://techcommunity.softwareag.com/u/Brian_Johnson1)\ **Post date:** [June 6, 2013, 7:19pm UTC](https://techcommunity.softwareag.com/t/disaster-recovery/101418/4 "2013-06-06T19:19:14Z")
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**Author:** ![system](https://global.discourse-cdn.com/techcommunity/original/3X/c/d/cd19967bb605d28a72d77eb83a1cae22f3df2eb8.svg) [@system](https://techcommunity.softwareag.com/u/system)\ **Post date:** [April 2, 2021, 3:02pm UTC](https://techcommunity.softwareag.com/t/disaster-recovery/101418/5 "2021-04-02T15:02:24Z")