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en:services:storage_services:backup:tsm:admin:workarounds:3sitereplication [2021/02/09 11:35] – [implementation] bnachtw | en:services:storage_services:backup:tsm:admin:workarounds:3sitereplication [2021/02/09 14:35] (current) – [Set-Up] bnachtw | ||
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+ | ====== 3 Site Replication ====== | ||
+ | |||
+ | FIXME **Documenation in Progress** FIXME | ||
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+ | As of version 8.1.11 TSM/ISP still does not provide Replication to two other sites. In this abstract I'll outline how to establish a workaround. | ||
+ | |||
+ | ===== Set-Up ===== | ||
+ | For this workaround we assume one primary server that should replicate it's data to two other sites in parallel: | ||
+ | |||
+ | {{ : | ||
+ | |||
+ | but no no chain replication (//at first glance//): | ||
+ | |||
+ | {{ : | ||
+ | ===== HowTo / Approaches ===== | ||
+ | ==== 3 Site Parallel Replication (3SPR) ==== | ||
+ | === basic idea === | ||
+ | The idea is to break up the replication relationship to the 2nd site and redefine it, using the 3rd site. afterwards break it up again and redefinde it using the 2nd site's server defintion. | ||
+ | === implementation === | ||
+ | assuming one node to replicate, named '' | ||
+ | == replication tsm0 => tsm1== | ||
+ | < | ||
+ | REMove | ||
+ | SET | ||
+ | UPDate | ||
+ | REPLicate Node | ||
+ | </ | ||
+ | == replication tsm0 => tsm2== | ||
+ | < | ||
+ | REMove | ||
+ | SET | ||
+ | UPDate | ||
+ | REPLicate Node | ||
+ | </ | ||
+ | == automated Replication== | ||
+ | The easiest way to automate the replication to both sides is to put the commands mentions above in a script and let it run as often as needed using a administrative schedule. | ||
+ | Taking " | ||
+ | < | ||
+ | /* first replicate to 3rd site */ | ||
+ | REMove | ||
+ | SET | ||
+ | UPDate | ||
+ | REPLicate Node | ||
+ | /* second replicate to failover site */ | ||
+ | REMove | ||
+ | SET | ||
+ | UPDate | ||
+ | REPLicate Node | ||
+ | </ | ||
+ | ==== 3 Site Chain Replication (3SCR) ==== | ||
+ | |||
+ | |||