Page History

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Write Ahead Log (WAL) segments - constant size files (WAL work directory 0...9.wal;, WAL archive 0.wal…)
CP markers - small files for events of starting and finishing checkpoints (UUID-Begin.bin, UUID-End.bin)
Page store - constains cache parameters, page store for partitions and SQL indexes data (uses file per partition: cache-(cache_name)\part1,2,3.bin, and index.bin)

Folders

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Ignite with enabled persistence uses following folder stucture

2.3+

Older versions (2.1 & 2.2)

Pst-subfolder name is same for all storage folders.

Name is selected on start, may be based on node consistentId

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Consistent ID may be configured using IgniteConfiguration or generated from local IPs set by default.

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Subfolder name is generated on start. By default new style naming is used, for example node00-e819f611-3fb9-4dbe-a3aa-1f6de4af5d02

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