Better section name

[ikiwiki.git] / features / index.mdwn

diff --git a/features/index.mdwn b/features/index.mdwn
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@@ -38,6 +38,14 @@ Originally a NetBSD port the guts have been radically adjusted and carefully tun
 
 TMPFS replaces MFS and MD (for post-boot use).
 
+## DM_TARGET_CRYPT, TCPLAY - Transparent disk encryption
+DragonFly has a device mapper target called dm_target_crypt (compatible with Linux' dm-crypt) that provides transparent disk encryption. It makes best use of available cryptographic hardware, as well as multi-processor software crypto.
+
+DragonFly fully supports LUKS (cryptsetup) and TrueCrypt as disk encryption methods. tcplay, is a free (BSD-licensed) 100% compatible TrueCrypt implementation built on dm_target_crypt.
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 ## SWAPCACHE - Managed SSD support
 
 This DragonFly feature allows SSD-configured swap to also be used to cache clean filesystem data and meta-data.  The feature is carefully managed to maximize the write endurance of the SSD.  Swapcache is typically used to reduce or remove seek overheads related to managing filesystems with a large number of discrete inodes.  DragonFly's swap subsystem also supports much larger than normal swap partitions.  32-bit systems support 32G of swap by default while 64-bit systems support up to 512G of swap by default.