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  • StickyIcky - Wednesday, August 27, 2014 - link

    I still don't know if I'm sold on hardware RAID for these types of storage solutions. What if this thing dies in 5 years? Am I going hunting on eBay for an old unit and hope it can get my data back? It's too much data to not be so forward thinking. Reply
  • ganeshts - Wednesday, August 27, 2014 - link

    This is not hardware RAID. It is mdadm-based, i.e, software RAID on Linux. If the unit dies, you can always connect the drives to a PC to recover the data (similar to what we did for with a Synology NAS last week). Reply
  • StickyIcky - Wednesday, August 27, 2014 - link

    That is certainly a different story. Thanks so much Ganesh! Great work as always. Reply
  • Samus - Wednesday, August 27, 2014 - link

    RAID is to protect from a disk failure (usually just one disk.) If your entire unit or multiple disks fail, you'd need to recover from a backup no matter what the solution (unless you want to spend $700+ per disk on RAID data recovery)

    Always have a backup. Just pickup a 5TB external for <$200 (or two for $400 and put them in a dual bay JBOD for 10TB) and plug it into the NAS USB port. All modern NAS devices have a USB port for backup.
    Reply
  • Death666Angel - Wednesday, August 27, 2014 - link

    Hardware-RAID cards or mainboards with hardware RAID (do they still exist?) can fail and in contrast to software RAID make it harder to retrieve the data. But that has been a topic of hundreds of pages of heated debate on home server enthusiast websites, this isn't the place to have that discussion. :D Reply
  • Gigaplex - Wednesday, August 27, 2014 - link

    If it's just the controller that's busted, you do not normally need to recover from backup. Reply
  • npz - Wednesday, August 27, 2014 - link

    I have pet peeve/rant about this...

    Backups are less feasible for users that have massive amounts of data e.g. audio/video files, multimedia production, where you can have many lossless audio and lossless video tracks for a small project.

    Furthermore, some people who prefer backups over RAID overlook the fact that backups are also a form of RAID. The more frequent your backups, the closer it approaches RAID-1. And if you have a setup that uses a head/controller to replicate data in realtime across two machines, then your backup == RAID1.

    There are also two opposing problems and mutually exclusive solutions to them when dealing with backups:

    (1) If your original copy is corrupted, your backup will also be corrupted, so this is in favor of less frequent backups. File versioning is not tenable for large data, not applicable if only the current version matters, and is still susceptible to this issue

    (2) You are working with live data, time critical data, data where only the current version matters, or data that cannot be reconstructed, so you need to backup as frequently as possible or use a realtime mirroring configuration simulating RAID1 across multiple machines.
    Reply
  • Beany2013 - Saturday, August 30, 2014 - link

    npz - that's not RAID (which is specifically disk bound), that's HA or RAIN.

    And it's also not a backup. A backup is never part of the live system specifically to avoid such filesystem corruptions. That is why RAIN/HA are not backup either, and should *never* be treated as such - it's not disasterproof.
    Reply
  • creed3020 - Wednesday, August 27, 2014 - link

    Overall I am left very impressed with this NAS. It just makes me wonder where Synology is because they are really missing products with this Rangely SoC. I really do like DSM but I have to wonder what the future holds when I need to upgrade from my DS 212j. If anything I hope that this increased competition benefits us consumers. Reply
  • Oyster - Wednesday, August 27, 2014 - link

    Ganesh, somewhat off-topic, but can you share what your scheduled tasks for SMART tests look like? I run a rapid test every night and a complete test on a weekly basis on my QNAP. I wonder if the SMART polls stress the disks? Maybe you can throw some light on this. Reply
  • Laststop311 - Thursday, August 28, 2014 - link

    I have used a lot of hard drives in my day. I have personally sworn off seagate as a brand. I had 5 yes count em 5 seagate hard drives fail within 18 months of each other. I rma it and the new ones they send me continue to fail one after the other. I'm currently using 4x 1TB wd red drives in my nas but I am running out of space. I want to make 1 big upgrade to 4x 6TB drives. Are the HGST he6 helium filled drives all they are cracked up to be? Do they really run noticeably quieter and cooler? Are they worth it to spend 420 dollars each on them? Reply
  • AntonyIndia - Friday, August 29, 2014 - link

    Having only one NAS system with any number of disks or RAID is not going to rescue you in case of trouble as the weakest chain is the mutual board / power supply/ fan in that box. better buy two identical single disk NAS boxes and back A up onto B once a day (or week) and keep B in another room offline even without power most of the time. Reply
  • cletus_slackjawd - Sunday, November 02, 2014 - link

    I really like this idea. I have an old Buffalo TerraStation 4x500gb that I have outgrown. Instead of replacing with another 4bay NAS I'll look for a single or dual and just buy a second as the backup. I never made consistant backups of my current NAS and as you stated, one hardware failure away from losing my data without expensive and time consuming fix. Reply
  • Jeff.Adams - Monday, November 10, 2014 - link

    I just inquired about buying a 4 or 6 bay Seagate NAS Pro and the vendor told me that Seagate only certifies their own drives to run in these NAS appliances. Your review was with WD drives so obviously the NAS works just fine with other brands. And obviously Seagate isn't going to sell it's own NAS with someone else's drives in it. Would Seagate not warranty the NAS if I put HGST drives in it? And if I *must* buy Seagate drives to get full warranty coverage, do you like the models that they come with?
    Thank you :)
    Reply

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