AVAMAR f_cache and p_cache Formulas
by Hersey on Jun.09, 2009, under Backups, My Notes
Formulas to help determine the correct size of your f_cache and p_cache for AVAMAR backups.
f_cache = N * 40MB
N = Millions of Files
So for 3 million files:
f_cache = 3 * 40MB
f_cache = 120MB
p_cache = DB Size in GB/Average Chunk * 20MB
Average Chunk Sizes:
Exchange DB: 16
Microsoft SQL DB: 24
For a 100GB Microsoft SQL DB:
p_cache = 20/24 * 20MB
p_cache = 83.3MB
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