——数据恢复技术改写计算机信息安全领域技术准则
2009 年，“数据恢复”这个让普通人陌生的词语不知不觉成为了 IT 用户的热门话题。随着近几年来全球多起自然灾难的发生让数据丢失事件升级，数据恢复软件和数据恢复工具技术”成为信息安全大舞台的主角，用数据恢复软件和工具挽回了数以亿计的损失，向遭受数据丢失的 IT 用户集中展示了它的强大威力，在计算机信息安全领域，数据备份和数据恢复构建成一条完整安全的长城防线。
不难发现，“数据恢复”是一种必须借助于数据恢复工具才能开展的工作，对于林林总总地数据恢复工具，除了专业技术工程师，一般人很少涉足。下面，记者带领大家一起来认识数据恢复工作中的中坚力量——数据恢复工具。
从数据恢复工具发展史看，数据恢复工具从原来的纯逻辑层的简单恢复到现在涵盖逻辑层、固件层、物理层的全方位数据恢复工具共经历了四个时期的演变。第一代数据恢复软件：逻辑数据恢复软件， DOS 下操作，可以进行 16 进制的修改（代表数据恢复软件： PCTOOLS 9 ）；第二代数据恢复软件，能进行分区丢失、文件删除的自动恢复 Windows 下操作（代表数据恢复软件： EASYRECOVERY 、 R-STUDIO 、 WINHEX ）；第三代数据恢复软件：逻辑及固件数据恢复软件及设备，（代表：效率源硬盘系列专修程序、 PC3000 硬盘维修卡）；第四代数据恢复软件：逻辑、固件、物理数据恢复工具一体式设备（代表数据恢复工具：效率源数据恢复指南针 Data Compass ）。
过去由于技术局限，第一、二、三代数据恢复工具存在功能单一、操作繁琐、恢复成功率低等缺陷，使数据恢复工作中很多问题无法得到解决，成功率在８０ % 左右止步不前。在此背景下，第四代数据恢复工具应运而生，在集合了前三代工具所有优势功能为一体的基础上，增加了最新疑难故障高智能内置功能一键解决方法，并首次实现了 USB 可移动数据恢复功能，高智能化设计全面简化操作流程，让普通计算机使用者一天内轻易上手。
下面，记者来详细介绍下数据恢复新成员——第四代数据恢复工具，这一代工具以数据恢复指南针 Data Compass （简称： DC ）为代表，标志着移动数据恢复时代的到来，最大的变革是数据恢复公司可直接带上设备到客户处进行上门服务，并可在客户的全程参与下进行工作，保证客户的数据不被窃取及散播。
ＤＣ是国家级高新技术企业效率源科技开发，这款数据恢复工具的设计方案源于八年的数据恢复经验的积累，所有参数都高于目前市面上的数据恢复工具，可以支持目前市场中销售的所有大容量硬盘。
记者从开发商效率源科技得知，ＤＣ主要是针对硬盘坏道损坏严重、磁头损坏（包括多磁头中部分磁头损坏和更换磁头后不稳定等情况）、 RAID 数据恢复等情况而专门研发的，通过后期升级，能够支持各种类型的存储卡数据恢复、 U 盘、 SDD 电子硬盘等多种存储介质，具有易于操作、学习周期短的特点，极大地降低了使用者的基础要求。
目前，以 DC 为代表的第四代数据恢复工具推出仅半年，就获得了全球专业数据恢复公司和 IT 服务公司的好评。据了解，截至 2009 年 3 月， DC 仅半年时间就被全球 300 家企业选用，成功完成了数千例高难度数据恢复工作。美国首屈一指的专业数据恢复公司 Top Tech 、欧洲数据恢复联盟的创始者 MICRO MANAGEMENT SRL 、英国 Datatrack- labs 、瑞典 data recovery Sweden 、 fields-data-recovery 、日本 Internet Owners Corporation ；印度 Stellar 等公司，都已引入 DC ，在专业数据恢复领域，第四代数据恢复工具 DC 已经成为数据恢复公司高品质服务的标志，同事， DC 也是高端数据恢复市场追捧的工具类产品。美国著名数据恢复大师 Mr. Scott 、英国专业数据恢复服务及培训商 Dataclinic 公司、意大利 IRS 公司更是将 DC 作为培训时的专业演示数据恢复工具。
英国 CSL 公司的研发部经理 --Mr. Xie 说：“数据恢复指南针能很好地帮助我们从坏道严重的硬盘上恢复数据。这是目前数据恢复市场上的其他工具无法做到的。特别是当我们使用固件区虚拟技术后，能直接从固件区有问题的硬盘上恢复数据。同时，多种读取算法设置能更好地优化磁头和磁头组件性能差的硬盘的数据恢复。 ”
相信在不久的将来，第五代、第六代数据恢复软件工具也会在效率源科技陆续诞生，为丢失数据的客户最大化地挽回损失，而这些下一代的软件工具会有什么新的特性和呢，记者拭目以待。
Data Recovery Software Tool in the Fourth Generation Conquer the Global Market
--Rewrite the Principle of Computer Information Security Field
In 2009, Data Recovery-this well known word is gradually becoming the hot topic for IT users. Due to the aggravation s of data loss caused by successive natural catastrophe in recent years, Technology of data Recovery tools have been the focus in information security field by retrieving the billions of loss and showing its power strength to IT users who suffered data loss. This technology has built a solid and secure defense line to computer information security field, data backup and data recovery.
It is obvious that data recovery is a work which can be finished only with the help of data recovery tools. As to various data recovery tools, except the professional technicians, few people involved in this. Then, the author will guide all of you to understand the main force of data recovery work-data recovery tool.
Looking into the development process of data recovery tool, the whole process from the sole logical data recovery to present overall data recovery which covers logical, firmware and physical level totally contains four generations' evolution. The first generation: Logical data recovery software which works in DOS mode and can make revision to hex. Typical data recovery tools are: PCTOOLS9. In the second generation, the data recovery tools can work in Windows version to handle automatic recovery for partition loss and file deletion. Typical tools: EASYRECOVERY 、 R-STUDIO 、 WINHEX. Data recovery tools in the third generation are software or equipment which can tackle logical and firmware data recovery (representatives: hard disk firmware and bad sector repair Program ((HD Doctor Suite)) from SalvationDATA and PC3000 hard disk repair card). While in the fourth generation, data recovery tools have been evolved into integrated equipment for logical, firmware and physical recovery with the typical examples: SalvationDATA Data Compass.
In the past, with the limitation of technology, data recovery tools in the first three generation all have the defects as sole functions, complicated operation and low recovery successful rate. All these cause many unsolved problems in data recovery field. Even the successful rate keeps at 80 percent and makes no progress in many years. In this background, the fourth-generation data recovery tools came into being. Tools in this generation has added single click solution with high intelligentized built-in features to newest difficult problems, and USB movable recovery feature by integrate merits of data recovery tools in the first three generations. Meanwhile, the tools in fourth generation are all in high intelligentized design as well as very easy operation. Common users can use them smoothly by learning them one day.
In the following, the author will particularly introduce New member of data recovery-the fourth generation data recovery tool which takes Data Compass (shortly DC) as representative. This tool marks the advent of movable data recovery era in which the biggest revolution is that data recovery companies can bring the tools to provide in-house service and work with involvement of customers in the whole process to prevent the stealing and scattering of customer's important data.
DC, developed by SalvationDATA-State hi-tech enterprise, adopts the innovative design concept which comes from years' data recovery experience accumulation. All the parameters are higher than other data recovery tools in present market and can support nearly all hard disks from different manufactures the large capability.
Development department says, ‘DC is mainly designed for hard disks with severe bad sectors, damaged heads (includes partial head damage or instable head after head swap) and RAID recovery. In the future, DC will support data recovery from various types of storage medium, such as, USB Stick, SSD flash disk, etc. Its features of easy to operation and short learning time dramatically reduce the requirement of user's expertise.
It is estimated that there are many professional data recovery companies who are using Data Compass since its first audition and give high praise to it. Until March 2009, there are approximately 300 companies who are using Data Compass to finish hundreds and thousands of difficult works. They are Top Tech in the USA, MICRO MANAGEMENT SRL in Italy, RSE data recovery services in Netherlands, Kroll Ontrack in Germany, Datatrack-Labs in UK, Data recovery Sweden, fields-data recovery in UK, Internet Owners Corporation in Japan, Stellar in India, etc. Besides being used widely in data recovery field, Data Compass contributes a lot in computer forensics, education and training. Presently, Data Compass is the tool applied in the training held by American data recovery specialist—Mr. Scott, also the first chosen tool assisting UK data recovery and training company-Data Clinic and Italian Data recovery and training company- MICRO MANAGEMENT SRL to provide professional data recovery services and training to people all around the world. In the forthcoming demo in Milan held by Italy MICRO MANAGEMENT SRL, Data Compass will reveals people its powerful strength again.
"Data Compass data recovery tools helps us to restore data from hard drives suffer from sever bad sectors, which are not able to be recovered from other tools in the DR market. Especially, by using the advanced Service Area (SA) emulation technology, it accesses the data from firmware defective hard drives directly. Also, multiple settings of the reading algorithm enable the optimization of data recovery from hard drives with poor performance of Head & Disk Assembly (HDA)" Zijian Xie, Research and Development Manager of UK Computer science labs said.
We believe that the Fifth and sixth generation data recovery tools will be born in SalvationData in the near future to find back the lost data for customers maximally. Which features will be contained in these tools? Pease let us to wait for the future miracles.
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