Case:A TV station Dell MD1000, a total of seven hard disks, 300G, a raid5.Suddenly all the hard disks were bright yellow lights, and the server could not be accessed. Solution:The engineer of the line data recovery center tested 7 hard disks and found that the No. 4 hard disk was severely damaged. The No. 3…
I’ve been using Linux in some form intermittently for the past ten years or so, but have only really been in to it for the past few months. What are the major differences between distributions? Ultimately I know that package management and branding are the big ones, but would it be easier to do task…
Case:A client failed to cause a hard disk.Customer laptops cannot start the system for the cause of diagnosis failure.Repair to the line for inspection, I found that the hard disk interface is abnormal Solution:Customer notebooks cannot start the system.Repair to the line for inspection and found that the disk interface is the Microsata interface.The engineer…
This is a general description of the most frequently asked questions about the IDE/EIDE Interface. This information is meant only to address basic troubleshooting of IDE/EIDE compatibility issues, and is not meant to be an in-depth discussion of all possible error issues. Our purpose is to aid you in solving basic IDE/EIDE difficulties that may arise.
Issues Covered:
1. What is IDE/ATA?
Integrated Drive Electronics (IDE) is a generic term applied to any drive with an integrated (built-in) disk controller. The first drives with integrated controller were Hardcards. In the IDE architecture, the disk controller is integrated into the drive. This combination drive/controller assembly usually plugs into an interface on the motherboard or an interface card plugged into an empty bus slot. The ATA Specification is simply a set of rules or guidelines that an IDE drive should conform to.
2. What does the IDE interface actually do?
The primary job of the IDE interface is to transmit/receive data to and from the drive.
3. Why place the Controller on the drive itself?
Placing the controller on the drive gives IDE drives built-in reliability because data encoding, from digital to analog is performed directly on the drive in a tight, noise-free environment. The timing-sensitive analog information does not have to travel along ribbon cables that may pick up noise and insert propagation delays into the signals. The integrated configuration allows for increases in the clock rate of the encoder, as well as the storage density of drive.
4. What is Enhanced-IDE (EIDE) and Fast-ATA?
Enhanced IDE (EIDE) was a marketing program first initiated by Western Digital. EIDE has two sides:
Fast-ATA, EIDE’s counterpart, was a separate marketing program that was introduced by Seagate and Quantum. This program leaned conservatively toward the ATA-2 specification.
5. What are the main features of EIDE
These are the main features:
6. Is ATA-5, 6 or 7 compatible with older IDE drives?
Older IDE peripherals will work with newer enhanced drives. However you will not be able to fully utilize the enhanced features of your ATA-5, 6 or 7 peripherals.
7. Is ATA-5, 6 or 7 compatible with older IDE controller cards?
EIDE drives are backward compatible with non-EIDE (standard) controller cards. However, an EIDE card will only perform at the capabilities of the controller; hence the EIDE drive will perform like a standard IDE drive.
8. What is ATA-PI
AT Attachment Packet Interface (ATA-PI) is a standard that implements SCSI like devices on the ATA bus. Devices like CD-ROM’s, tape drives and other removable media. The advantages of ATAPI are:
ATAPI’s disadvantage is that it requires the use of software drivers for operability.
9. What is Cable Select (CSEL)?
Cable Select (CSEL) is an optional feature per the ANSI ATA specification. It is an alternative method of identifying the difference between device 0 and device 1 on an IDE interface cable. Hard drives configured in a multiple drive system are identified by CSEL’s value:
Additionally, CSEL requires a specialized (and more expensive) 40-pin 80-wire IDE interface cable, unlike the standard EIDE interface cable that is far more commonly used. We do not recommend using the CABLE SELECT feature unless your specific computer system documentation requires its use.
10. How does my computer know which drive is the Master and which is the Slave?
When only one drive is installed, the single drives controller responds to all commands from the system. When two drives (which means two drive controllers) are installed, both controllers receive all commands from the system. Each drives controller must then be configured to respond only to commands issued to it. In this situation, one controller must be designated as master and the other as slave. When the system sends a command to a specific drive, the other drive’s controller must remain silent. A special bit (the DRV bit) is used in the Drive/Head Register to distinguish between the controllers.
Case:Customers said that when the computer host is turned on, the motherboard’s BIOS can recognize the model of the hard disk, and the capacity of the hard disk is normal, but it cannot enter the Windows operating system.After that, the customer mounted the hard disk directly into a board. Under the Windows operating system, it…
We all know that Vista and Windows 7 doesn’t let you specify custom extensions or customize them to your liking. What program do you use to edit file associations in Vista and Windows 7? EDIT: Just to be more clear, I’m looking for a program which lets you: Create new extensions (I am aware of…
Case:Deleted the data by mistake, there is no operation after the shutdown is turned off directly, Solution:After testing, the engineer determined the time to be deleted, and the recovery software recovered with professional data was successful.
1. TOSHIBA MK3265GSX 320GB 5400 RPM 8MB Cache 2.5″ SATA 3.0Gb/s Internal Notebook Hard Drive -Bare Drive
Model: MK3265GSX
Shipping: Free
Price: $42.99
2. WD SiliconEdge Blue SSC-D0128SC-2100 2.5″ 128GB SATA II MLC Internal Solid State Drive (SSD) – OEM
Model: SSC-D0128SC-2100
Shipping: Free
Price: $199.99
3. WD SiliconEdge Blue SSC-D0064SC-2100 2.5″ 64GB SATA II MLC Internal Solid State Drive (SSD) – OEM
Model: SSC-D0064SC-2100
Shipping: Free
Price: $124.99
4. HITACHI HDS721050CLA362 (0F10381) 500GB 7200 RPM 16MB Cache SATA 3.0Gb/s 3.5″ Internal Hard Drive -Bare Drive
Model: HDS721050CLA362 (0F10381)
Shipping: Free
Price: $39.99
5. Seagate Barracuda LP ST32000542AS 2TB 5900 RPM 32MB Cache SATA 3.0Gb/s 3.5″ Hard Drive -Bare Drive
Model: ST32000542AS
Shipping: Free
Price: $109.99
Case:The Dell server storage of a company is a RAID5 array consisting of 12 SAS interfaces 300GB hard disk, which set up two RAID5 and 1 RAID0 respectively. Two membership disks have been alarm and the system cannot run normally.The server to save the company’s important report needs to be recovered, so the customer finds…
When the computer is not operational it can cause a lot of direct and indirect problems. You can not work, browse the web, send emails, etc. Fortunately computer hardware is available in many online stores, you order it and the next day you will have it. Anything can fail and everything is replaceable except the data. If the hard drive fails you will also lose all the files. Many users never think of this possibility and therefore they do nothing to prevent data loss. Failed hard drives are then sent to some data recovery company to rescue valuable files. But data recovery service is expensive. Is there any cheaper alternative?
Data Backup Instead of Data Recovery
Of course, data recovery can be cheap if you understand basic principles of computers. The fact is that every computer component can fail, including the hard drive. This is the disk where the operating system is located and where you also store your files. Everything you use, create or share is stored there. Therefore it makes sense to create a copy of this data. And not just one copy-you should periodically back up the disk drive. This can be done in two different ways and both are needed to have peace of mind. If the hard drive data will be properly backed up, no computer malfunction will cause you headache, only a minor annoyance.
Disk or Partition Image
The first type of backup is the disk or partition image. This is a complete copy of all the data on the disk. The image is usually one file that contains the operating system and all your files. This image can be used to recreate the original disk in the case of failure. You simply install a new drive and restore the latest disk image. This method has disadvantage of being time consuming. But because it is mandatory to have a method to quickly restore the disk you should make one at least every few months. There many free disk imaging tools on the web. Simply choose one that fits your operating system and needs.
Regular Backup of Important Files
The second type is the real backup of your recent data. You should periodically (weekly or even daily) create a backup of all important files. The cheapest way to create backups is to use existing CD or DVD drive and free backup/restore software. And the easiest way is to create incremental backups. The first backup contains all files–the next backups only save new or modified files. This significantly speeds ups the backup process and saves a lot of time. You can create backups to CD/DVD, external hard drive, remote computer or any other suitable media. You can also few times a year create a complete archive of all your projects. This will further simplify data recovery process and you will also have a history overview of your work.
Your Own Cheapest Data Recovery Service
Having both disk images and recent backups is a guarantee for quick and painless data recovery process. If the hard drive fails you get a new one. When the computer hardware is working again you restore the last disk image and then you restore the missing or changed files from the latest backup. This is the cheapest data recovery service you could imagine. Anybody who uses computers should also take care for the data. Backups should become routine as it is sending emails or reading news. To prevent searching for a cheap data recovery service you better prevent data loss. With free backup software it is easy, cheap and fun.
Free Data Recovery Services:
It is important for customers to have a feel of data recovery pricing before they send their disks to recovery companies. Pricing comes down to Drive Size, Media Type (Hard Drive, RAID, SSD), and Issue with the Drive:
Related Link: Data Recovery Cost
