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Everything posted by continuum

  1. 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?
  2. Glad someone's giving Samsung competition.
  3. 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.
  4. Or thousands. My last quote from OnTrack to recover, I think it was 20GB off a failed drive like this, was something like $1800...
  5. 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.
  6. 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... 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.
  7. 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.
  8. 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....
  9. 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. 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). " 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). " Shows 0C to +70C.
  10. 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
  11. Does defragmenting the drive help?
  12. 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: 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... 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.
  13. 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.
  14. You haven't given nearly enough work-load-specific information... but 99% of desktop won't see the difference. It's safe to say you're in that 99%.
  15. Legacy is not UEFI. You should have seen both a UEFI and a Legacy option in the system boot menu. Heck I just setup a Z440 a few months ago, unfortunately I no longer have access to that box so I can't take any screenshots for you.
  16. We copy easily a few PB of data per year between various computers with various brands and sizes of external drives without any errors that we've noticed. Given typical rated error rates of 1*10^14 you shouldn't be seeing errors anywhere nearly this often-- maybe one every few TB. What programs are you using to copy? If you think about it, if you're getting errors nearly as often as you are, you should be seeing system instability frequently as well...?
  17. Is there any plan to do any thermal throttling testing of M.2 SSD's?
  18. 5TB in a single 2.5" external means it could replace quite a few of existing (mostly older) 3.5" 5TB and smaller external disks we have in use now. Tempting, depending on performance.,32860.html Says it's air and PMR...?? (awesome if it is, means more room for helium...!)
  19. I'd go hit HP, Dell, Cisco, etc. websites too to see what they price. A reseller normally gets a big chunk off, but it's usually still not cheap. Have you talked to other resellers?
  20. The controller manages the flash, I doubt it's even visible to the UEFI, so probably not? WD did a combo SSD + HDD at some point a while back but I don't think it sold very well. WD Black2 Dual Drive, I think it was.
  21. As long as you format it appropriately just about anything should work. Performance over drives today is fairly similar and for Time Machine backups, any differences are going to be minuscule.
  22. In terms of actual, benchmarked performance or in terms of real-world use? The former, as said, the 850 EVO is hard to beat for the money (there are faster, but they're $$$)... in terms of real-world use, I've found that most people can not tell the difference between an 850 EVO and something slower like a Sandisk X400...
  23. Which drive models exactly are you comparing in your specs above? I've got multiple copies of Seagate Desktop HDD 8TB units in (ST8000DM002) in several desktops here and I can't notice the noise at all, I would assume a similar situation with any of their competitors from WD, Toshiba, or HGST. However my labs and working areas are not the quietest, so it's hard for me to make a true comparison as to how noisy or not noisy they are if you have sensitive ears.