Author Topic: Drives... SMR or not?  (Read 169 times)

emccarron72

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Drives... SMR or not?
« on: November 15, 2020, 09:49:21 am »
Just received a Linkstation 220 that I chose because: (from Buffalo's website...)

Buffalo would like to assure our partners and customers that the hard drives in our products, even ones that contain WD Red NAS drives, use Conventional Magnetic Recording (CMR) technology instead of SMR. Therefore, there is no danger of RAID array issues associated with SMR technology. As Buffalo's NAS products come with drives included, we carefully select our drives and rigorously test them before adding them to the product chassis to ensure the highest level of quality.

Yet the drives report as Toshiba DT02's.  Which seem to be drive managed SMR.

This hopefully explains why it's estimating a stupid long amount of time to move 2TB between NAS devices.

I have an email in to tech support to find out why the discrepancy.  I realize the linkstation is low end, but for $400 I expect a bit better performance than this...

Anyone else bumping into really slow xfer rates?

oxygen8

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Re: Drives... SMR or not?
« Reply #1 on: November 15, 2020, 11:34:08 am »
LS220 can write with a maximum of 50MB/s
you need 12 hours with full speed to transfer 2TB



emccarron72

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Re: Drives... SMR or not?
« Reply #2 on: November 15, 2020, 11:38:38 am »
Coming up on 75 hours.  It's copied 500GB.

The older NAS is only 100M ethernet.

Copy software is estimating another 7 days.

Something isn't right. :)

oxygen8

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Re: Drives... SMR or not?
« Reply #3 on: November 15, 2020, 11:44:37 am »
100MBit -> 5MB/s (max 10MB/s)

-> 120 houres

oxygen8

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Re: Drives... SMR or not?
« Reply #4 on: November 15, 2020, 11:50:34 am »
pause your backup
Use Atto to test both nas

your copy station (PC or MAC) can also be a bootle neck

LS220 on gigabit: