BigFix relays use a FIFO (first-in, first-out) cache, automatically managing downloads across your network. As an admin, your main responsibility is setting the cache size using _BESGather_Download_CacheLimitMB. For OSD, 25–50 GB is recommended due to large payloads like Microsoft ISOs (5+ GB).
To prevent image files from being purged, set up a daily policy action to re-cache them after hours—ensuring they’re always available when needed.
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