continuum

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Everything posted by continuum

  1. Take the drive out and put it in another computer, and see if it comes up. File system errors may mean you're SOL, or it may mean you can pull 99% off, there's insufficient information to say.
  2. Just to complicate things, Seagate has their own helium drive design on the way (if not already here) too. Don't think it has hit retail yet tho. Never seen a review listed in watts per TB, but I suppose that's a valid metric.
  3. Highest performance is going to be RAID0, but obviously there's no redundancy with that. RAID10 plus a hot spare maybe? Not sure how fast that card gets, it's an LSI 2208 chip so I don't think the controller would bottleneck performance in such a setup.
  4. What do you need? Redundancy/high availablity? High performance? How much total capacity and how budget did you have? What controller is this-- you may end up limited by the controller in some cases, too...
  5. No idea if it will do NVMe, but there's a couple of external PCI-e GPU enclosures out there that should work in theory. You'd probably need a M.2 to PCI-e adapter card to fit inside the enclosure, and I don't know if any or all need external power.
  6. Software RAID is usually done by the CPU on your system via the OS. I don't think Windows 7 does any sort of useful software RAID. The chipset RAID on your motherboard is probably the last thing you'd want to use, since you'd be tied to the AMD 990FX chipset-- if your motherboard ever died you'd be screwed. However, the chipset RAID on your motherboard would pass through just fine to Windows 7. The manual is available at the link you provided: http://www.gigabyte.com/Motherboard/GA-990FXA-UD7-rev-1x#support-manual You can use Velcoraptor's in RAID, but as WD says, strictly speaking it is not a configuration they support due to lack of RAID-friendly firmware and hardware specifics on the drives. Intel 520 series SSD's should work fine in RAID as well. However note that the Intel 520 Series is pretty old, and especially at the 120GB capacity point, they are pretty slow as the 120GB capacity point has insufficient parallelism to take full advantage of the SSD controller's capabilities. A single Intel 520 Series 240GB or pretty much any modern SSD would be an option worth considering. Ditto for your Velociraptors-- a modern 1TB/platter 7200rpm harddisk is probably faster if that is an option for you.
  7. The controllers do exist, such as: https://www.broadcom.com/products/pcie-switches-bridges/usb-pci/usb-controllers/usb3380 (assuming I'm reading the spec sheet right-- although that one doesn't say anything about supporting NVMe...) However I haven't looked for such a product... If your system supports Thunderbolt, that might be easier, since TB carries PCI-e natively...
  8. svchost is just a generic starting process -- the DLL's actually run are linked off it, can you download ProcessExplorer or some other diagnostic tools to determine what processes are actually being run? https://en.wikipedia.org/wiki/Svchost.exe
  9. Out of curiosity, which retailer were they from? I generally don't worry much about manufacturer date on drives, but "new" "old" stock that old is unusual.
  10. I think those are external from the model? I'm not 100% sure, but if they're external they might work-- I don't think the optical drive bay in the SFF is deep enough to fit an internal one (it might be, but I haven't checked). Either was as Kevin said you'll need a SAS PCI-e controller card. Half-height since that's all the SFF chassis allows.
  11. 3ware

    If some show up I would think you should be on WRT firmware compatibility, but RAID can be more fickle than anything... unfortunately I don't have much specific experience with the 9550SX, mostly the one before (9500, I think it was). As Brian said for anything that old you might be SOL...
  12. The average user, even a power user, won't notice the difference between PCI-e and SATA SSD's. I'd save your money and buy whatever's the best value you can find for the size you need. Sandisk X400, Crucial MX300, whatever... you can buy 'em in M.2 form factor so not sure why you're worried about cables? (M.2 form factor supports both PCI-e and SATA, just need to see what your motherboard supports- very likely it's both PCI-e and SATA) If you don't care about write performance then why worry about it? Also a good TLC NAND equipped SSD under even most power users' workload is not likely to exhaust its pseudo-SLC cache, and hence you will never notice the performance drop because you won't ever get that far. If you're reading benchmarks at Anandtech or Storagereview or whatnot where they do show the performance hit, well, it's true, but how often are you ever going to push that many sustained I/Os?
  13. Glad someone's giving Samsung competition.
  14. Does your backplane actually have a SAS expander chip in it? Or is it just a backplane? If the backplane is just a plain backplane then using the correct cables should work. If your backplane actually has a SAS expander chip in it, then you would need to make sure your new HBA is compatible with the SAS expander chip in the backplane, and you would be limited by connection speeds supported by the backplane's SAS expander.
  15. Or thousands. My last quote from OnTrack to recover, I think it was 20GB off a failed drive like this, was something like $1800...
  16. Dropped it means crashed heads... you're SOL. If you plan to send it for professional recovery do NOT open it. You're only risking further damage to the drive to zero additional benefit.
  17. IIRC the only one with enough data to be statistically relevant (and even some of their collections of specific models it isn't really large enough to be relevant) is Backblaze... https://arstechnica.com/information-technology/2017/01/8tb-hgst-disks-show-top-reliability-racking-up-45-years-without-failure/ They only have a tiny, tiny handful of enterprise disks that are helium filled so don't read too much into it, but between Backblaze data and what we are seeing, I'm not seeing any concern for long-term reliability of helium filled disks.
  18. Are you showing a signature collision or something else? If it's a signature collision you can use DISKPART from the command line to change the signature.
  19. Were the initial scans on the affected drive still trying to finish? I know we've encountered that a few times from customers-- the initial scan/initial index/whatever was still running before the customer pushed the unit into production....
  20. Under what circumstances? Things like data retention are extremely temperature dependent. Hence why the NAND spec itself is not that important, the environment and application it's going to be used in is hugely important. http://www.samsung.com/us/business/oem-solutions/pdfs/V-NAND_technology_WP.pdf Shows a massive difference in the duration spec'ed for data retention-- the high temperature test is 13 hours at 85C, the low temperature test is 500 hours at 25C (note that that's just the testing, not the actual spec'ed retention of the NAND). https://www.micron.com/about/blogs/2015/may/addressing-data-retention-in-ssds " The JEDEC specification for data retention tells us that for enterprise storage devices, data retention at the end of the service life shall be at least three months (stored at 40°C). For SSDs in the client computing market, data retention shall be at least one year after the drive’s service life (assuming it’s stored at 30°C). " https://www.micron.com/products/nand-flash/3d-nand Shows 0C to +70C.
  21. That would be up to the aerospace and defense application vendor designing the spec. I think you'd want to ask them, not the SSD maker...:P
  22. Does defragmenting the drive help?
  23. Toshiba has some SSHD's too, but I think they're also 5400rpm. You're probably SOL unless you want an old model like the Momentus XT, and given the areal density improvements in newer drives, a newer 5400rpm drive is almost certainly faster than an older 7200rpm drive with lower areal density. Toshiba product page for Toshiba's SSHD's: http://toshiba.semicon-storage.com/us/product/storage-products/client-sshd/mq02abxxxxh.html SR benchmarks of an old (circa 2013) Seagate Momentus Thin vs. the even older Momentus XT... note in actual application traces, the Momentus Thin is faster... the newest one is the Seagate FireCuda, but I'm not seeing any reviews yet... http://www.storagereview.com/seagate_sshd_thin_review_gen3_500gb_st500lm000 The current (circa 2015) Seagate Laptop SSHD 1TB smokes the 750GB one in desktop benchmarks, but I think it's now technically one generation behind the Seagate FireCuda 2.5" line. http://www.storagereview.com/seagate_laptop_sshd_1tb_review
  24. http://www.hgst.com/products/hard-drives/desktop-drive-kits Part numbers are in one of the tabs on that page. Performance differences on modern 1TB/platter+ drives are pretty modest, I wouldn't stress too much if it's a 5400rpm vs a 7200rpm drive unless lots of small files are involved.