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The "CassandraHardware" page has been changed by JonathanEllis. The comment on this change is: linkify. http://wiki.apache.org/cassandra/CassandraHardware?action=diff&rev1=6&rev2=7 -------------------------------------------------- So to summarize, if you use a different device for your `CommitLogDirectory` it needn't be large, but it should be fast enough to receive all of your writes. Then, use one or more devices for `DataFileDirectories` and make sure they are both large enough to house all of your data, and fast enough to satisfy your reads and to keep up with flushing and compaction. - As covered in MemtableSSTable, compactions can require up to 100% of your in-use space temporarily in the worst case, free on a single volume (that is, in a data file directory). So if you are going to be approaching 50% or more of your disks' capacity, you should raid0 your data directory volumes. + As covered in [[MemtableSSTable]], compactions can require up to 100% of your in-use space temporarily in the worst case, free on a single volume (that is, in a data file directory). So if you are going to be approaching 50% or more of your disks' capacity, you should raid0 your data directory volumes.
