西部数据公司（WD）推出了两款新硬盘—一WDEXpert27．ZGB720（）RP和WDCaviar20．SGB5400RPM。这两款硬盘采用了WD引以为荣的数据卫士功能，并增加了数据自诊断和自修复等保障数据安全的功能。WD市场总监RachelD．Forke女士说，“这种硬盘在国外已经有2年销售历史，并在国际上 Western Digital introduced two new drives, WDEXpert27. ZGB720 () RP and WDCaviar20. SGB5400RPM. Both hard drives feature WD’s data guarding features and add features such as data self-diagnosis and self-healing to ensure data security. WD Marketing Director RachelD. Ms. Forke said, "This hard drive has a 2-year history of sales abroad and internationally