davidedney123

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Everything posted by davidedney123

  1. davidedney123

    Beyond the obvious

    My reasoning behind a shift to Samsung SSDs for upgrades.
  2. davidedney123

    Beyond the obvious

    Funnily enough another one failed today. About 800 power on hours in a Dell Latitude E5520. Same symptoms as before. System hanging and stuttering and getting BSODs, with iostor.sys storage timeouts in the event log. Run a SMART test and it might pass a quick test, but it'll fail a long one with bad sectors. Copying the data off the disc reports bad sectors that have to be skipped. Copy performance very slow - 700MB/minute imaging the drive to another disc. So far every one has been "fixed" by a secure erase followed by a few hours left sitting in a machine powered on and in the BIOS, as advised by Crucial's telephone support, but I cannot possibly re-deploy these drives even if they are no longer displaying symptoms. After this one today I think I'll be pulling the lot out of service as these users are all over the world and cannot afford unplanned downtime. Seen this now on 256GB and 128GB drives. My colleague has a 512GB version of this drive in his personal Mac that he bought with his own money, and as you can imagine now has cold feet! Crucial's support have been fairly useless, I don't know if I'm alone in facing these issues with these drives but if not it's a pretty big problem. Usage patterns are entirely regular and boring, Windows 7 / Office 2010 use with some CAD viewing and other boring business usage. Not power users by any stretch. Dave As an addendum - I have loads of Samsung PM800 and PM810 (also known as 470 series) drives supplied as OEM fit in Dell machines, all working very well indeed after a couple of thousand power on hours and some with very heavy use.
  3. davidedney123

    Beyond the obvious

    I've upgraded maybe 30 Dell Latitude E6510 and E6x20 machines to Crucial M4 SSDs, and I am beginning to see some failures and odd behaviour (all latest firmware). Usually the drive can be restored to normal behaviour with a secure erase, but this is really damned inconvenient. I have another 20 or so upgraded with Samsung 830s, and another 50 delivered with Samsung 470 or 830 drives - all of which are flawless. The performance of the Samsung is the equal of the Crucial and it is the SSD of choice for Dell, Apple and other OEMs - on the back of this it has become my "go to" SSD. Dave
  4. davidedney123

    MegaRAID and tape drives

    Hi I am currently running an Adaptec 39320A-R that happily runs my two SCSI harddisks (not in RAID) and a DAT72 drive on the 2nd channel. I'm thinking about getting an LSI Logic MegaRAID 320-2E for PCI-E, but I was wondering if anyone could confirm for me that non harddisk devices will work on this, and also that it will be happy running the drives non-RAID. Thanks all! Dave
  5. davidedney123

    Samsung SpinPoint P120

    Typical Samsung drive really - painfully average. At least it's quiet. Surprised by the reliabilityof the P80. I suppose the margin for error in the reliability survey is such that you could call 34% average though On the Sequential Transfer rate graph the legend says "Series1" and "Series2" instead of inside tracks, outside tracks or whatever term is used! Dave
  6. Hi I'll be extremely grateful if anyone can answer this simple question. Why is it that on any PC, no matter how manly, putting a CD in an optical drive causes the PC to become unresponsive for a couple of seconds? I am using a Dual Xeon 3.2GHz system, and I fail to see why this happens. Before anybody suggests it, yes I am sure that all drivers are current, the drive isn't boned and DMA is on. This happens on EVERY PC running Windows, no matter what combination of hardware. Some optical drives cause the freeze to last for longer. With my Pioneer DVR-A09 it lasts an absolute age when you put in a blank DVD. My question is why does this happen. Cheers, Dave
  7. davidedney123

    Looking for AMD MP Dual Motherboard.

    Sorry, that should read Prestonia Xeons. The point is the same though - a pair of those OEM off eBay and an Asus i875 based board is the cheapest way to get an SMP system today. That won't be true for long though - if cheap SMP is what you want then get a 2.8GHz Pentium D when they come out. Dave
  8. davidedney123

    Looking for AMD MP Dual Motherboard.

    The AthlonMP CPUs and the dated platform will be a far bigger bottleneck than AGP speed in an AthlonMP setup. You're looking at a 266MHz FSB and single channel DDR266 - it was great when the platform was launched almost 4 years ago, but is very sad now. I see very, very few reasons why you should be building an AthlonMP system now, and gaming is certainly not one of them. Pick up cheap Presionia Xeons on eBay and one of the i875 based Xeon boards from Asus or something along those lines, if money is tight. Dave
  9. davidedney123

    New onkyo Soundcard

    Sorry, forgot to say - yes, that card does look cool. Dave
  10. davidedney123

    New onkyo Soundcard

    Hi I have to agree with BFG9000 - the best way to get clean audio out of a PC is to take it out digitally and perform digital to analog conversion offboard. I don't use my PC for listening to music so it is not connected to my hi-fi at all, but I have a set of Cambridge Soundworks DTT3500 speakers that connect to my audigy with a single digital cable carrying all 5 channels. You could presumably do something with this digital output to take 5.1 output from a PC to a surround reciever with appropriate digital inputs. I would guess that all but the cheapest and nastiest offboard DAC is going to kick the ass of anything living inside a PC. I laughed so much when I saw that Aopen board with the vaccum tubes inside - 100% gimmick IMHO. Dave
  11. davidedney123

    Inserting a disc causes PC to stutter

    I was discussing this with a friend, and we decided this is the single most infuriating thing a PC can do. I can tolerate a PC being unresponsive (just) if it's doing some serious work, but when it's because of something like putting a CD in the drive it makes me want to kick the damned thing around the room.
  12. davidedney123

    Inserting a disc causes PC to stutter

    Hi I've seen it on a lot of systems, and it is very dependent upon the optical drive. Sometimes it's only a fraction of a second stall, on other drives it can be a couple of seconds. I believe it is only Explorer that's doing it. I suspected it was something like windows waiting for the drive to respond, but I am at a loss as to why it has such a crippling effect on Explorer - can't it just wait in the background? The worst thing to do is to insert a blank CD and then straight away start Nero - the whole PC just sits there being unresponsive until the drive has finished it's stuff. For those who asked, the particular system I'm tormenting at the moment is a dual Xeon 3.2 on a Supermicro X5DAL-TG2 (E7505). Optical drives are connected to the motherboards IDE ports. All drivers are the latest. As I said, however, this happens to a greater or lesser extent on every machine I have ever used. Odd thing is, it isn't always consistent on the same machine. Dave
  13. In much the same way they work in Dual Xeon setups. Same strengths and weaknesses as a single CPU pretty much. The 1CPU - 2CPU scaling factor seems to be a good bit higher for Opterons too. Dave
  14. davidedney123

    Dual-Core Processors

    Hi I'm more interested in Dual Core because it makes it far, far cheaper to build a 4 way system. When Dual Core Xeons and Opterons come out it'll be possible to pack four cores in a PC chassis on a affordable (ish) motherboard. No more crappy 400MHz FSBs and massive, massive price premiums for 4 way systems! The way Intels pricing seems to be heading, it'll be possible to build a 4 way system for only slightly more than a 2 way system costs today. Now that's worth getting excited about. Dave
  15. davidedney123

    Areca 1260 Native PCI-E or Bridged?

    I can't think of anything non-snarky to say right now. Back it up with some kind of documentation. The card's internal circuitry doesn't have anything to do with the bus it's attached to. 200217[/snapback] No, but it's interface with the rest of the machine does. This is I/O we're talking about... You could have a chip capable of shifting 2 GB/sec, and if you attach it to standard PCI it'll still have to go at >133MB/sec. Bridging also adds more overhead, possibly increasing latencies and thus reducing peak bandwidth. Dave
  16. davidedney123

    WD3200JB at Tom's

    If it boasts the same sterling reliability that the WD2000JBs I've seen in service have then it should make couriers all around the world happy, and guarantee the jobs of people working in WD call centres for a while longer :-D Dave
  17. davidedney123

    Gigabit Switches

    The Netgear one has a cool metal casing...
  18. davidedney123

    Teach spammers a lesson!

    Hi Here is a story describing a program from Lycos that runs as a screensaver, and continually requests small amounts of data from webservers used by known spammers to sell products. Not DDoS, it just aims to cost them a fortune in bandwidth. http://news.bbc.co.uk/1/hi/technology/4051553.stm You can get it here http://makelovenotspam.com/intl/ From the US I guess you'd say "international english". The only way we can even hope to wipe out spam is to make it non profitable, and this is one way to do that. Dave
  19. davidedney123

    ok, i promised: difference between the U.S./EU

    Hi Generally I have noticed that people see where they live in a negative light, and anywhere they visit in a positive light. I'm not sure if it's the novelty of being somewhere else, or just the natural human desire to find something better than what you already have that colours perceptions. I'm sure if you lived there for 10 years you'd think that it was just as bad, just in different ways. Same goes for anywhere in the world. As for the slow driving - that's a negative in my opinion Dave
  20. davidedney123

    WD 2.5" Laptop drive

    If it offers the same combination of low, low noise and sterling reliability that my WD2000JBs have then it'll be a turd in a tin can. Dave
  21. davidedney123

    7200.7 Martians?

    Hi I've just bought a new 200GB SATA 7200.7. WHen the drive has been idle for maybe 1 minute, it starts making quite quiet, but constant seeks. Not thrashing seeks, just click-click-click. If I then access the drive so it seeks normally, it shuts up for a minute and then starts again. I have a pair of X15-36LPs that have the normal martian ticking, but this is far more annoying as it is almost constant when the drive is not being accessed, even if it is rather quiet. Has anyone else seen this behaviour? Cheers, Dave
  22. davidedney123

    7200.7 Martians?

    The machine is current about 4 feet, but will soon be moving onto the floor. It's audible when inside the case, and this is not a whisper silent PC. It doesn't seem to be doing it so much now. Probably trying to make me think I imagined it. Cheers, Dave
  23. davidedney123

    7200.7 Martians?

    It's not "thrashing" or meowing, it's just a gentle click-click-click-click-click-click-click..... The click is quieter than the normal seek noise, I believe. Dave
  24. davidedney123

    western digital get very noisy after 1 year

    I have two WD 2000JBs, one is about 12 months old and the other about 6 months old. The older one has recently started making an annoying whining noise when it's spinning - I had a ~400MB Seagate back in the mid 90s that made a similar noise. It's really annoying the hell out of me, so I really hope the other one doesn't start doing the same thing. Dave
  25. davidedney123

    7200.7 Martians?

    btw - that sounds identical to the behaviour my drives are exhibiting. It's not that loud at all, but it still manages to be more annoying that the noise a drive makes when it is thrashing it's guts out in a Compaq machine with 128MB RAM and WinXP :-D Dave