Image .f File Single File Layout
Single File Layout
When the detailed backup file information of one catalog backup is less than 4 megabytes in size, NetBackup stores the information in a single image .f file. The image .f file is always greater than or equal to 72 bytes, but less than 4 megabytes.
The following is an example of an .f file in a single file layout:
-rw------- 1 root other 979483 Aug 29 12:23 test_1030638194_FULL.f
Multiple File Layout
When the detailed backup file information of one catalog backup is greater than or equal to 4 megabytes, the information is stored in multiple .f files: one main image .f file plus nine section .f files.
Separating the section .f files from the image .f file and storing them in the catstore directory improves performance while writing to the catalog.
The main image .f file is always exactly 72 bytes.
-rw------- 1 root other 72 Aug 30 00:40 test_1030680524_INCR.f
-rw------- 1 root other 804 Aug 30 00:08 catstore/test_1030680524_INCR.f-list
-rw------- 1 root other 1489728 Aug 30 00:39 catstore/test_1030680524_INCR.f_imgDir0
-rw------- 1 root other 0 Aug 30 00:40 catstore/test_1030680524_INCR.f_imgExtraObj0
-rw------- 1 root other 1280176 Aug 30 00:39 catstore/test_1030680524_INCR.f_imgFile0
-rw------- 1 root other 192 Aug 30 00:40 catstore/test_1030680524_INCR.f_imgHeader0
-rw------- 1 root other 0 Aug 30 00:40 catstore/test_1030680524_INCR.f_imgNDMP0
-rw------- 1 root other 9112680 Aug 30 00:39 catstore/test_1030680524_INCR.f_imgRecord0
-rw------- 1 root other 2111864 Aug 30 00:39 catstore/test_1030680524_INCR.f_imgStrings0
-rw------- 1 root other 11 Aug 30 00:40 catstore/test_1030680524_INCR.f_imgUserGroupNames0
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