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2. Block allocation map - Wikipedia

   en.wikipedia.org/wiki/Block_allocation_map

   In computer file systems, a block allocation map is a data structure used to track disk blocks that are considered "in use". Blocks may also be referred to as allocation units or clusters. [1] CP/M used a block allocation map in its directory. Each directory entry could list 8 or 16 blocks (depending on disk format) that were allocated to a file.

3. DMOZ - Wikipedia

   en.wikipedia.org/wiki/DMOZ

   DMOZ (stylized dmoz in its logo; from directory.mozilla.org, an earlier domain name) was a multilingual open-content directory of World Wide Web links. The site and community who maintained it were also known as the Open Directory Project (ODP). It was owned by AOL (now a part of Yahoo!

4. Block (data storage) - Wikipedia

   en.wikipedia.org/wiki/Block_(data_storage)

   DBMSes often use their own block I/O for improved performance and recoverability as compared to layering the DBMS on top of a file system. On Linux the default block size for most file systems is 4096 bytes. The stat command part of GNU Core Utilities can be used to check the block size. In Rust a block can be read with the read_exact method. [6]

5. Extent (file systems) - Wikipedia

   en.wikipedia.org/wiki/Extent_(file_systems)

   The direct benefit is in storing each range compactly as two numbers, instead of canonically storing every block number in the range. [1] Also, extent allocation results in less file fragmentation. Extent-based file systems can also eliminate most of the metadata overhead of large files that would traditionally be taken up by the block ...

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   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

7. Directory-based cache coherence - Wikipedia

   en.wikipedia.org/wiki/Directory-based_cache...

   In the sparse directory format the wastage is reduced by storing only the cached blocks in the directory. [citation needed] Consider a processor with a cache size of 64KB with a block size of 32 bytes and the main memory size to be 4MB. The maximum number of entries that the directory can have in the sparse directory format is 2048.