HDD，Hard Disk Drive的缩写，即硬盘驱动器的英文名。最基本的电脑存储器，我们电脑中常说的电脑硬盘C盘、D盘为磁盘分区都属于硬盘驱动器。目前硬盘一般常见的磁盘容量为80G、120G、160G、250G、320G、500G、640G等等。硬盘按体积大小可分为3.5寸、2.5寸、1.8寸等；按转数可分为5400rpm/7200rpm/10000rpm等；按接口可分为PATA、SATA、SCSI等。PATA、SATA一般为桌面级应用，容量大，价格相对较低，适合家用；而SCSI一般为服务器、工作站等高端应用，容量相对较小，价格较贵，但是性能较好，稳定性也较高。
HDD Guardian 0.6.2 ==
new:
added support for LSI Fury (thanks to Jan);
added support for Dell PERC H200E (thanks to Conan);
added support for Areca controllers (thanks to Spacedust);
added support for Dell PERC H310 (thanks to Bill and Jorge)
added capability>
to update language files;
display device form factor in Manage > Information;
now is possible set a perdrive power mode from Manage > Advanced;
Attributes format and Firmware debug are moved into Manage > Advanced page;
Power mode is now removed from Settings window;
display temperature information on Manage > Temperatures page;
is possible to set a different (newer) version of smartctl instead the one bundled with HDD Guardian;
added many options in mail settings;
added support for 3ware clipboard command from Settings > Device detection (thanks to Binder Daniel);
ATA errors are now excluded from calculation of reliability. Now calculation is based upon IDs 5, 196, 197 and 198 of SMART table;
errors log now have an easy to read error des cription;
added AMD, ATP and Silicon Power logo, SSD image sample and web link;
bugfix:
fixed a couple of bugs affecting virtual devices;
readded code to Browse button on Settings > Sharing > Smartctl Output;
fixed an issue with email settings (thanks to Willy);
fixed a bug into devices context menu (Xml report);
fixed a bug that affects HDD Guardian under Windows XP;
fixed some graphical issues;
fixed GDI handle memory leak;
fixed working time reported by Intel 520 SSDs.
