wbtiger
/
foundationdb
mirror of https://github.com/apple/foundationdb.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Some rewording in the table describing different replication modes

This commit is contained in:
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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
documentation/sphinx/source/configuration.rst
View File

@ -316,19 +316,19 @@ Single datacenter modes
+==============================+==+=================+=================+================+
| 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 |
+------------------------------+--+-----------------+-----------------+----------------+
| Minimum # of machines | | | | |
| Required machines | | | | |
| for fault tolerance | | impossible | 3 | 4 |
+------------------------------+--+-----------------+-----------------+----------------+
| Ideal # of | | | | |
| Ideal number of | | | | |
| coordination servers | | 1 | 3 | 5 |
+------------------------------+--+-----------------+-----------------+----------------+
| # simultaneous failures | | | | |
| after which data may be lost | | any machine | 2+ machines | 3+ machines |
| Simultaneous failures | | | | |
| 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.