Western Digital Caviar Green HD WD - Disco duro interno de 750 GB (5400 rpm, 8,9 cm (3,5 pulgadas), caché de 64 MB, SATA)
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Descripción del producto
Altura: 25,4 mm
Ancho: 101,6 mm
Capacidad de disco duro: 750 GB
Ciclo comenzar/detener: 300000
Color del producto: Negro
Compatible con Mac: No
Conectar y usar (Plug and Play): Si
FireWire 400: No
FireWire 800: No
Interfaz del disco duro: SATA
Peso: 730 g
Profundidad: 147 mm
Sistemas operativos compatibles: Windows XP, Vista, 7
Tamaño de disco duro: 3.5"
Tiempo para unidad preparada: 14,5 s
USB con suministro de corriente: No
Unidad, tamaño de búfer: 32 MB
Velocidad de transferencia de datos: 3 Gbit/s
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On the other hand, it is not fast. Used as a storage unit, it is adequate. The drive's biggest problem is reliability. Since this hard drive's introduction in 2009, users have consistently reported premature failures and data corruption. These complaints were well warranted, for the manufacturer has shorten the life cycle of this computer component by design.
The source of the problem is Western Digital's attempt to make the device "more green" - use less electricity. One way to accomplish this goal is to park the heads on a plastic pad after eight seconds of no read/write requests instead of allowing them to float over the spinning platters of the hard drive. This adds up to 10,800 cycles each day. The numerous scrapings gradually wears out the heads. According to some literature, 250,000 to 1,250,000 cycles will result in damage that will lead to read/write errors. If you do the math, data corruption will begin within 23.148 to 115.741 days if you are employing the hard drive on a heavily used server. Regular consumers will not notice read/write problems until later. Some WD drives reported 3,000 to 5,000 cycles per day. At this rate, the first instances of data corruption will begin within 83.33 to 250 days.
From my experience, early data loss will not be noticed by the average user. There are no signs of trouble if work files are not accessed, edited, and save. With numerous usages, lost sectors on the hard drive appear and indexes become corrupted. Then, damages become apparent. During bootup, Windows OS will begin employing Check Disk (chkdsk/f) to repair errors. Chunks of bad information get deleted and corrupted indexes are re-corrected during the process. Eventually, 50%-to-60% drive gets wiped out before the user realizes the problem. He accesses a file, and there is none. Using a file manager, further examinations reveal other missing data. This degradation takes time - months to a year depending on computer usage.
How can this planned obsolesce benefit WD? To make money, the hard drive has to function beyond the two year warranty period. To avoid too many returns, the manufacturer employs a few legal tricks. First, the guarantee is misleading. It begins on the day of manufacture. It takes six months to go from production to market. As it sits on a shelf waiting for a buyer, the warranty becomes shorter. When you purchase it, there are only 1.5 to 1.25 years left at best. On some units, the expiration date of older stock may have already passed. Second, some hard drives will malfunction prematurely within the warranty period. According to a few users, the company has this problem covered. WD repair technicians often examined the returned units' LOAD CYCLE COUNT and refused replacement because the product was used "outside its intended purpose."
Nevertheless, six years of complains have forced the manufacturer to do something - provided a firmware fix. WDIDLE3.EXE software is used to reset the parking cycle to as high as five minutes. For normal users, this change brings down the parking cycle to 133 per day. This is within the industrial average. Most drives experience 10 to 200 per day and are rated around 600,000. WDIDLE3.EXE can also turn off head parking. Unfortunately, this is not recommended. Users have reported that drive speed was reduced to a crawl or exhibited read/write problems.
This solution is a masterpiece in public relations. Instead of deactivating or eliminating the eight second head parking cycle on newly manufactured drives, WD forces the user to make the firmware change after the sale. The process is not easy, and the company's website does not explain or provide any information - it provides just the software. The procedure requires unplugging all other devices that are connected to SATA ports and numerous resets to the BIOS. The computer must boot in DOS via a CD or USB 2.0 thumb drive and typing the required codes. Just finding the necessary software to create the booting device is a pain.
As a result, non-technical consumers will not do anything and allow their hard drives to malfunction. For the "techkies," it will take hours of research, internet searches, and trial-and-error. Hopefully, they will also be discouraged. In one stroke, the company has placated the critics and still maintain high sales volume.
I have already done the necessary work. So, here is the easiest procedure using a booting USB 2.0 drive.
GO TO GOOGLE AND DOWNLOAD THE FOLLOWING PROGRAMS. . . . I can not provide links because the Amazon server automatically deletes their location.
. . . . . HP USB Disk Storage Format Tool
. . . . . Z-Zip
. . . . . wdidle3.exe
. . . . . FreeDOS (fd11src.iso)
DO THE FOLLOWING IN THIS ORDER TO CREATE A BOOTING USB 2.0 FLASH DRIVE.
. . . . . 1. Install Z-Zip
. . . . . 2. Use Z-Zip to extract HP USB Disk Storage Format Tool and FreeDOS iso.
. . . . . 3. Install the HP software.
. . . . . 4. Install a USB 2.0 flash drive on one of computer's USB 2.0 ports.
. . . . . . . Right-click the HP icon.
. . . . . . . Go to COMPATIBILITY/PRIVILEGE LEVEL.
. . . . . . . Check RUN THIS PROGRAM AS AN ADMINISTRATOR.
. . . . . . . Exit the program.
. . . . . 5. Activate the HP program by clicking its icon.
. . . . . . . Select FAT for FILE SYSTEM
. . . . . . . Place a check mark on CREATE DOS STARTUP DISK
. . . . . . . Go to USING DOS SYSTEM FILES LOCATED AT and point to the
. . . . . . . . . . subdirectory of the FreeDOS files. It is \FREEDOS\SETUP\ODIN
. . . . . 6. Format the USB 2.0 flash drive. Depending on the size, it will take time.
. . . . . 7. Use WINDOWS EXPLORER to copy WDIDLE3.EXE to your formatted USB 2.0 flash drive.
SHUT OFF YOUR COMPUTER.
. . . . . 1. Deactivate all devices connected to your SATA ports by pulling out their two cords. You do not want WDIDLE3.EXE to corrupt their firmware settings.
. . . . . 2. Connect your Western Digital Green Hard Drive.
RESTART YOUR COMPUTER.
. . . . . 1. Go into your PC's BIOS setting.
. . . . . 2. Turn AHCI off. This will enable your flash drive to be recognized.
. . . . . 3. Set the thumb drive as the first bootable drive.
. . . . . 4. Save your BIOS settings and exit.
RESTART YOUR COMPUTER. Your thumb drive should boot the computer and go into MS-DOS.
. . . . . 1. Type "wdidle3.exe" without the quotes and press ENTER. This will activate the program.
. . . . . 2. Type "wdidle3.exe /r" without the quotes and press ENTER. This will show the current timeout. The factory default is eight seconds.
. . . . . 3. Type "wdidle3.exe /s300" without the quotes and press ENTER. This changes the autopark timer to 300 seconds or five minutes - the maximum allowed.
. . . . . 4. Type "wdidle3.exe /r" without the quotes and press ENTER. This will check that the hard drive has accepted the change.
. . . . . 5. Shut off your PC.
IF YOU NEED TO PROCESS ANOTHER HARD DRIVE, pull out the two connecting cables, attach them to the next Western Digital Green drive, and repeat the above process.
ONCE FINISHED, TURN OFF YOUR COMPUTER AND PLUG YOUR SATA DEVICES BACK.
. . . . . 1. Turn on your PC
. . . . . 2. Go back into your PC BIOS setting.
. . . . . 3. Turn AHCI on.
. . . . . 4. Change your boot order.
. . . . . 5. Save your settings and exit.
This is a lot of confusing work. Unfortunately, there is no other alternative for fixing a flawed hard drive and preventing it from self destructing. . . . It is your money.
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