The dCache Book

The dCache Book is the guide for administrators of dCache systems.

For dCache there are two kinds of releases, the Golden Releases and the time based Feature Releases every three months. In the list below the Golden Releases are marked with a star .

Starting with the new Golden Release (dCache 1.9.12) each release of dCache is available in two file layouts: FHS and opt. The FHS layout has files located according to the Filesystem Hierarchy Standard. Most modern distributions have adopted the FHS, so we recommend that fresh installations of dCache used this layout.

The opt layout places all the files in /opt/d-cache directory. This is where previous versions of dCache located all the packaged files. The opt layout is provided for backwards compatibility and to satisfy those sites that cannot use the FHS layout.

The first Golden Release, dCache 1.9.5, is designed in the opt layout.

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opt layout	FHS layout
2.1	2.1
2.0	2.0
1.9.12	1.9.12
1.9.5