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Some rewording in the table describing different replication modes

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A.J. Beamon 2019-07-11 08:51:59 -07:00 committed by Alex Miller
parent b452292a14
commit a0203457d9
1 changed files with 6 additions and 6 deletions
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documentation/sphinx/source/configuration.rst
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@ -316,19 +316,19 @@ Single datacenter modes
+==============================+==+=================+=================+================+ +==============================+==+=================+=================+================+
| Best for | | 1-2 machines | 3-4 machines | 5+ machines | | Best for | | 1-2 machines | 3-4 machines | 5+ machines |
+------------------------------+--+-----------------+-----------------+----------------+ +------------------------------+--+-----------------+-----------------+----------------+
| Replication | | 1 copy | 2 copy | 3 copy | | Total Replicas | | 1 copy | 2 copies | 3 copies |
+------------------------------+--+-----------------+-----------------+----------------+ +------------------------------+--+-----------------+-----------------+----------------+
| # live machines | | | | | | Live machines required | | | | |
| to make progress | | 1 | 2 | 3 | | to make progress | | 1 | 2 | 3 |
+------------------------------+--+-----------------+-----------------+----------------+ +------------------------------+--+-----------------+-----------------+----------------+
| Minimum # of machines | | | | | | Required machines | | | | |
| for fault tolerance | | impossible | 3 | 4 | | for fault tolerance | | impossible | 3 | 4 |
+------------------------------+--+-----------------+-----------------+----------------+ +------------------------------+--+-----------------+-----------------+----------------+
| Ideal # of | | | | | | Ideal number of | | | | |
| coordination servers | | 1 | 3 | 5 | | coordination servers | | 1 | 3 | 5 |
+------------------------------+--+-----------------+-----------------+----------------+ +------------------------------+--+-----------------+-----------------+----------------+
| # simultaneous failures | | | | | | Simultaneous failures | | | | |
| after which data may be lost | | any machine | 2+ machines | 3+ machines | | after which data may be lost | | any process | 2+ machines | 3+ machines |
+------------------------------+--+-----------------+-----------------+----------------+ +------------------------------+--+-----------------+-----------------+----------------+
In the three single datacenter redundancy modes, FoundationDB replicates data across the required number of machines in the cluster, but without aiming for datacenter redundancy. Although machines may be placed in more than one datacenter, the cluster will not be tolerant of datacenter-correlated failures. In the three single datacenter redundancy modes, FoundationDB replicates data across the required number of machines in the cluster, but without aiming for datacenter redundancy. Although machines may be placed in more than one datacenter, the cluster will not be tolerant of datacenter-correlated failures.