pandabear

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Everything posted by pandabear

  1. Paul, I don't know where you get the info from, but I have an Extreme IV in my lab right now that works as a real HD running windows XP and is in UDMA IV. I am not familiar with Lexar's design, but the one with SanDisk with binary memory (Extreme IV, Industrial, and Ducati) can be used as a HD replacement to a certain extend. The difference between that and their SSD line product is the interface (SATA or CF, which needs adapter to work as PATA), and the wear leveling's robustness for desktop usage profile. Remember, the performance of Extreme IV's 40MB/S is for FAT file system, NTFS has a lot more writes for integrity reasons and that will not run at 40MB/S. The SSD from SanDisk is of M-System's design and it uses a different flash access engine that is more suitable for windows' main drive. You got to be very careful on what each brand's promise and reliability. A no name Taiwanese brand may work for 1 week at 300x, but it may not have enough wear leveling to last the warranty period, or it may have only 60x performance in random usage pattern. It is hard to tell without doing some real testing in a controlled lab. If I were you I would buy what Dell is ordering right now, they have very through acceptance test to protect them from bad design and poor quality. From what I understand, Samsung and SanDisk are both approved, but not Lexar yet.
  2. pandabear

    Bad sectors on HDD....

    The score of reallocated sectors at 180 and a raw value of 13C (316) means that it already has 316 bad sectors reallocated, it is getting close to the threshold score of 140. I would say you should replace the HD asap since there are probably not many spare sectors left. As far as useful life this drive is almost done. The value of Uncorrectable sector at 200 is score, the raw value is the one that counts, at 8, so it is not too bad. A drive in its prime condition should have 0 or almost 0 reallocated sectors.
  3. pandabear

    Fragmenting RAID volumes

    Fragmenting in logical disk is the same in RAID or multi disk volume. You want to maximize the continuous data in any single volume. This reduce software overhead, as well as seek within the same disk in the array. Unless you get the file to fragment exactly where the strip between disk split (almost impossible), a fragmented file will still be slower than a continuous one.
  4. pandabear

    Replacement

    If you by chance find a hard drive with the same firmware version on it, it will be very safe to swap the PCB. If you found one that has different firmware, but close in the ASIC silk screen (same chip) and manufacturing date, then it is probably safe too.
  5. pandabear

    What to do with old hard drives

    For something greater than 40gb, I would use them to upgrade other pcs. For something greater than 20gb, I would use them in external enclosure. For something greater than 10gb, I would give them away for free. For something smaller than that, take it apart and salvage the magnet, and put those magnet inside my car's engine or transmission drain pan to collect metal particles.
  6. 100 power cycle per month is very light duty. I would imagine the wear and tear on the drive by keeping it running would be higher than the 100 load/unload. If you are still worried, have a longer wait time before it goes into sleep as a compromise.
  7. Yes, that is the problem. Got it fixed now, thanks. Another question. When I slipstreamed the SP4, the new CD I created will prompt me to insert the SP4 disk if I use it to boot and install windows. I only slipstreamed the i386 directory. Do I need to do more?
  8. The configuration is as followed: 2 7200rpm PATA drives (recycled 120GB), connected to Promise FastTrak 100 as stripped 1 PATA cdrom connected to MOBO Secondary Master 1 1.44MB floppy connected to MOBO Try to boot Win2K installation CD to install, and press F6 for SCSI driver, but it couldn't find driver on the floppy. I tried downloading the driver again and again, from Promise, and still couldn't find it. The same driver works fine if I install windows on a single HD connected to MoBo, and have a stripped array connected to promise. Any suggestion on what may be wrong?
  9. A related note: if you haven't already done so, create a slipstreamed SP4 installation CD and use that to install from. A whole lotta bugs were fixed between the original 1999 release and SP4. That's a great idea. Can I also slipstream drivers into the CD?
  10. Still have the Fast Ethernet PCI card? i am interested. Is it a small or large item?
  11. There should be a spec for each standard, and manufacture should have those info on their website. Those standard are typically "worst case" consumption, so if you want to know which one consumes more/less, you really have to look up from manufacture. IMO the smallest card from the latest design usually use smaller processes on the NAND and that consumes less power, but make sure you get the plain vanilla low performance model, and smaller size, so you are not getting 2 or 4 chips version. Oh, name brand usually have better power management firmware than generic, so they usually consume less power.
  12. pandabear

    what's "BE" in smart parameter?

    Might have been a vendor unique value. Since you say it is fairly new and it is rapidly decreasing to threshold, why don't you call the manufacture's tech support and ask them?
  13. Eventually they will switch, but when?
  14. pandabear

    Not Enough Memory to duplicate

    Use another software that doesn't copy the whole thing to ram at a time. How "accurate" do you need it to be? If you are just copying partition to partition, I think any drive manufacture's utility burn onto a CDROM to boot will work.
  15. Sounds good, where are you located at?
  16. pandabear

    most reliable notebook hard drive

    I personally prefer Hitachi as the IBM travelstar has the best overall reliability in the past. The worst I have found is Toshiba as I have seen 3 Toshiba died in my friends' laptop. But, like all other hard drives, it varies from generation to generation.
  17. Nothing beats the reliability of Raid 1 external HD. While many of you question Maxtor's reliability (I personally have no problem), their OneTouch with RAID should be better than any non-raid out there. Buy a spare 300GB+ drive, if one of the 2 inside the external enclosure die, immediately replace it. The chance of both drives died before you get the chance to replace at least one is the SQUARE of only one drive died.
  18. pandabear

    Drive on its last legs, what to do?

    So how much was the recovery?
  19. pandabear

    SMART imminent failure

    Like whiic said, when an attribute fails it means the drive is dying. Drive manufacture reserve a percentage of their space for spare after they already mapped out the bad sectors at manufacturing time. Normally they map out enought marginal sectors that bad sectors will not grow under usage. When it start developing bad sectors, BIOS usually will not warn you unless it already exceed the threshold (i.e. only 6% of the spare sectors are left), and that most likely means something is starting to deteriorate. Since you have no important data on it, I'd say RMA it if under warranty or buy a new drive if out of warranty. It is neither possible for user to reprocess it nor worth the effort/risk. I have opened up one of these drives, and found crashed head scraping up media (alumnium and its coating), and sending alumnium dust everywhere in the drive. Definitely not fixable.
  20. pandabear

    can acoustic box damage a pc/hadisk?

    I think if you can feel constant vibration from the sub (acoustic box) then it could cause enough vibration to reduce reliability (longer seek, more minor head crash -> grown defect -> more bad sectors). The magnetic field won't do a thing to the drive, it is very well shielded.
  21. pandabear

    Maxtor 250 on it's deathbed

    Sounds like a head stuck/crash/unable to load boot code scenario in some of the development drives I got here at work. I'd say look at the SMART value and see if any is out of limit or continues to grow. RMA if needed. AFAIK there is no known reliability issue in MaxLine II, most likely a unit that got bad due to mishandling or environmental condition. Why don't you pop it in another machine and use a smart utility to get the values and post it here, we can take a look at them for you.
  22. pandabear

    Putting Maxtor to the test. . .

    Yes, I saw that warranty cost per sales info too. Unfortunately it is not based on unit volume but on dollar cost. Maxtor has a higher cost model than Seagate and from what I know, Seagate made most of the parts themselves and their assembly line is very automated. That could greatly influence how much their warranty cost them. Remember, the reliability of each brand is different in every generation of drives. Look at IBM/Hitachi, Seagate, WD, Maxtor, and Quantum, they all have reliability problem at one point in their life. This is the reason I never buy the latest and greatest (until it is out for 6 months).
  23. pandabear

    Putting Maxtor to the test. . .

    Sorry to hear what happened. Unfortunately unless you are big OEM like DELL or HP, or big retailer like Bestbuy's and Staples, you are a small fry and no company will do much for you after your warranty expire. All HD will die one way or another, and usage condition has a lot to do with it. Maybe you can put another drive in the OneTouch? I think there should be utility out there that you can use to format a new HD for OneTouch enclosure. From what I know you don't need to use maxtor drive, you can use another brand.
  24. pandabear

    Computer Engineering

    CE, EE, CSE, CS are all very closely related field that you will frequently find one of each in a team of engineer, working on different aspect of the problem. EE - ASIC design, PCB layout, RF issue, etc, etc CE - digital logics, how to make circuit run efficiently for the application, i.e. what our EE need to design based on what the software will be running. CSE, CS - how to design the software running on the hardware we designed. It is all about where your strength and what your interest is.