docs: update partition encryption options
Text from Adam Vande More
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@ -1815,12 +1815,12 @@ pg_dumpall -p 5432 | psql -d postgres -p 5433
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<listitem>
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<para>
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On Linux, encryption can be layered on top of a file system
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using a <quote>loopback device</quote>. This allows an entire
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file system partition to be encrypted on disk, and decrypted by the
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operating system. On FreeBSD, the equivalent facility is called
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GEOM Based Disk Encryption (<acronym>gbde</acronym>), and many
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other operating systems support this functionality, including Windows.
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Storage encryption can be performed at the file system level or the
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block level. Linux file system encryption options include eCryptfs
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and EncFS, while FreeBSD uses PEFS. Block level or full disk
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encryption options include dm-crypt + LUKS on Linux and GEOM
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modules geli and gbde on FreeBSD. Many other operating systems
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support this functionality, including Windows.
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</para>
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<para>
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