[Amazon.ca] 10tb Seagate external hard drive $199
- Deal Link:
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Thats a 5TB drive and is most likely SMR, from what they're describing.gotglint wrote: ↑ saw this 4-star review:
TITLE: Great value but with some limiting aspects
Reviewed in Canada on June 30, 2020
Capacity : 5TBStyle: Portable HDDColour : BlackVerified Purchase
I bought two of these NTFS drives and returned one because of low performance with write speeds. When I investigated the write speeds, I found and identical drive had much poorer performance than another and therefore returned the slow drive. See below:
Slow drive: Timing buffered disk reads: 10 MB in 3.81 seconds = 2.63 MB/sec
Fast drive: Timing buffered disk reads: 94 MB in 3.05 seconds = 30.83 MB/sec
It turns out, that after transferring files, the drive performs some sort of activity until it recovers. I don't know what the drive is doing but may be performing some kind of SMR activity (Shingled magnetic recording (SMR)), indexing or buffering.
The problem with this recovery period, is the drive becomes almost unusable while this process is occurring. The drive also causes your computer to stall while rebooting as the OS waits for the drive. I addition, the drive will take an uncomfortably long time to mount upon startup.
I have not experienced this behavior on any of my dozens of hard drives, but perhaps the technology is reaching some limit at 5TB.
In conclusion, if you find a drive has very poor write speeds, keep the drive instead of returning it to Amazon. This experience is bizarre to say the least and I would like to know more about how it occurs, but I am very pleased with the hard drive regardless because of it's large capacity and price.
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Bought 4 in January - manufactured between August and Nov 2020, all were IronPro
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Yup, any of the helium-filled Seagate drive, including the 10TB and above should be conventional magnetic recording.
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