Is this my first SMR drive ?

Discussion in 'SSDs & Data Storage' started by Jandor, Jan 12, 2020.

  1. Jandor

    Jandor Limp Gawd

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    I just bought a Seagate 2.5'' portable 2TB Expansion drive. It's called STEA2000400. All the other brands were 2TB and look like equal choices but I already have a seagate that looked the same as the picture on the box of that one and it was clearly PMR.
    This one however is much much slimmer and lighter, is so cheap it's all plastic everywhere and slips very easily on wherever it sits.
    Now the worse. I want to save a Vista computer with 4GB of data on it (4x 2 GB disk in Raid1) and put it on another computer.
    That Vista computer is a little bit old (Core 2 Quad), only has USB2 ports.
    Now the thing is that this disk is very slow even for USB2. I get at best 13MB/s when I get more than 20 GB/S on any other USB2 disk including encased ones.
    But the thing is, that from time to time it like pauses at around 100KB/s (from 10 to 250KB/s) for quite some time and then restarts at 11/13MB/s. Furthermore, and I believe this is the OS bad counting, if the transfer begins at doing 100Kb/s, it stays around that figure on Vista, while it is clear there is higher data transferred (around 10GB/S).
    I insist that the disk doesn't seem to have any problem but it is well known that if you ever pull an SMR during a copy or have it disconnected or a crash, it may be happening during rewriting that will lead to fundamental data loss, including that which you though you had safely stored.

    So I need to know if this behavior reveals that this is an SMR drive or this is clearly an SMR drive from Seagate by the name. I would be unhappy but but I've already bought it and using it, and would like to know if I need to take that much care with it. Not even sure Vista treats that sort of drive when pulling it off by the rules.
     
  2. likeman

    likeman Gawd

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    can be any type of disk inside them (got to shuck it to get the actual disk part number)

    over USB 2 should should be getting closer to 30mb/s but after so much written data they can tank to very slow speeds (13mb/s does seem to slow)
     
    IdiotInCharge likes this.
  3. IdiotInCharge

    IdiotInCharge [H]ardForum Junkie

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    Mostly, the enclosures themselves are... ass.

    I have 4 x 8TB SMR Seagates that, while slow for the type of drives they are, are still 5x faster from a SATA port than they were from the USB enclosure they came inside (I popped 'em).

    If you're concerned about external speeds I'd recommend finding a different enclosure.
     
  4. likeman

    likeman Gawd

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    its a USB 3 hdd the controller be fine (it's a sealed unit)

    but extremely high chance its a SMR from short searches i have done, it will cause windows file manager to go a bit wonky when it slows down (its like running first gen SSD without trim they run utter crap) better suited for write once read many

    note the drive has to be left idle and powered for about 5-10 minutes for it to empty the small PMR part of the disk to the larger SMR and restore read and write performance
     
  5. x509

    x509 [H]ard|Gawd

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    Maybe I'm being too judgmental, but I haven't bought Seagate in years. I used to buy only Hitachi, and now only WD for HDDs. For SSDs, I will never again touch a Mushkin drive, since one quit on me (my wife's system) like about a week after the warranty ran out. :mad: For SSDs, Ive been buying Crucial and Samsung, but the hot NMVe drive these days seems to be Sabrent.
     
  6. Jandor

    Jandor Limp Gawd

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    Looks like it. So I need to wait 5/10 minutes idle to secure everything he wants to do on the SMR part is okay. The only advantage is that it's really lighter than a bit older same kind of 2.5 HD from Seagate with same design.