Hello all (my first post)!
Background: I have bought a new WD20EARS 2TB, connected to my Win 7 machine via a eSATA docking station, formatted it, and then transferred about 1.3TB worth of data to it, then one day suddenly, while the WD20EARS is powered and connected to the PC but not being accessed, win 7 frozen and upon reboot, PC can’t detect the WD20EARS and I don’t think the WD20EARS managed to power up ever since (tried 3 power source/adapters). Now given that I just bought that drive, I took a bold guess (after reading up on the web) and quickly ordered another WD20EARS from the same online shop. Luckily for me, they do seem to come from the same batch (manufacturing date are just a few days apart) and I have successfully swapped the PCB and retrieval some of the lost data!
PCB related question: Now, I am wondering, if I keep both WD20EARS (I haven’t even formatted the newer WD20EARS yet), would I be able to use the functioning PCB to access both HD in the long run? I know that there should be something adaptive on the PCB specific to the drive. Is the adaptiveness specific to a batch of harddisk, or would it evolve following the drive’s usage, so as the two WD20EARS age, their PCB need to store something different? (I know it does not make sense, as I will be gambling 4TB worth of data on a already proven fragile single PCB design)
PCB related question: Does just unscrewing the PCB and taking it out and put it back void any warranty? The label just said: void if seal, label or cover is removed or damaged. My friend is telling me that they use special paint on the screws so they can detect if the screws have been worked on???
3) PCB related question: Is there any recommendation on how not to fry the PCB again? I didn’t notice any noticeable drop in voltage/current (brightness in lightings) in the room when the first WD20EARS fried… And my other HDs connecting via the same docking station are still healthy. And both the PC and the power source of the docking station are connected to surge protected sockets, so I don’t know what more precaution steps I could have done
WD20EARS performance: My motherboard is a very old ASROCK ALIVENF6G-DVI board (with SATA only), and I am connecting from the internal SATA socket via a SATA2eSATA panel then a eSATA cable to my SATA HD docking station (the total cable length should be less then 1.5M. It took over 4 days to a full (non-quick) format the first 2TB WD20EARS under win7… is it normal? The write speed after formatted is about 20MB/s when write cache disable and about 40MB/s with write cache enabled (can’t remember exactly now, can verify again later), but my other SATA drives only achieve less than 70MB/S via this docking station set up anyway, so is this performance within normal parameters for WD20EARS ?
Not particularly related to this WD20EARS failure, but is there any recommendation of good SMART monitor software running under Win7?