News, tips, advice, support for Windows, Office, PCs & more
Home icon Home icon Home icon Email icon RSS icon

We're community supported and proud of it!

  • variable backup speed with M.2

    Home Forums AskWoody support Windows Windows 10 Questions: Win10 variable backup speed with M.2

    Tagged: 

    Viewing 7 reply threads
    • Author
      Posts
      • #2365072
        krism
        AskWoody Plus

        (21H1)
        New to me Lenovo T570 that had a Samsung MZVLW256HEHP 256GB M.2 SSD in it. I discovered that it had an old 1.23 BIOS so updated that to latest 1.45 and that improved Macrium things a lot, (also updated Win 2004 to Win 21H1)(also ran Samsung Magician and it sees no probs and says 85%), but even now when I am imaging it (GPT/UEFI) the speed varies from 1.1G down to 800Mbps. Took 9 minutes to back it up where the T530 took 7 minutes. Backing up to a 1T Sammy 860 SSD on Sabrent USB3 adapter – I think I regularly got 1.4Gbps on my T530 laptop. Why would this be slower than imaging from a 250gb ssd on my T530? Hdtach shows the M.2 speed at 1.2GB/s avg read – FAST.

        One thing just occurred to me – the old T530 had memory 4GB+4GB. This has a single 8GB. Could that cause that much difference?
        Thanks!!!

        Group W (windows, current)
        - ThinkPad T570-20HA, i7-7600U, 2.8GHz, UEFI/GPT, Win10 21H1 Pro x64, 16GB, Sammy 256GB M.2 NVMe PM961. -

        • This topic was modified 1 month, 1 week ago by krism. Reason: spelling
      • #2365075
        RetiredGeek
        AskWoody MVP

        4GB+4GB most likely running Dual Channel memory. Single 8GB Single Channel memory. Yes, it will have an impact. Also you state M.2 which is an interface standard (size of slot). What you don’t state is weather or not it is NVME a memory interface standard. Not all M.2s are NVME!

        HTH 😎

        May the Forces of good computing be with you!

        RG

        PowerShell & VBA Rule!
        Computer Specs

        1 user thanked author for this post.
        • #2365076
          krism
          AskWoody Plus

          Many thanks! How would I tell?

          Group W (windows, current)
          - ThinkPad T570-20HA, i7-7600U, 2.8GHz, UEFI/GPT, Win10 21H1 Pro x64, 16GB, Sammy 256GB M.2 NVMe PM961. -

          • #2365077
            krism
            AskWoody Plus

            CNET says its M.2 2280 form factor.

            Form Factor (Short)
            M.2
            Form Factor (metric)
            M.2 2280
            Form Factor (Short) (metric)
            M.2
            Storage Interface
            PCI Express 3.0 x4 (NVMe)
            Interface
            PCI Express 3.0 x4 (NVMe)
            Internal Data Rate
            2.8 GBps
            Internal Data Rate (Write)
            1.1 GBps
            4KB Random Read
            250000
            4KB Random Write
            180000

            Group W (windows, current)
            - ThinkPad T570-20HA, i7-7600U, 2.8GHz, UEFI/GPT, Win10 21H1 Pro x64, 16GB, Sammy 256GB M.2 NVMe PM961. -

      • #2365080
        krism
        AskWoody Plus

        Memory4less.com says
        Technical Specifications for MZVLW256HEHP-000L7
        Model
        Manufacturer Samsung
        Manufacturer Part # MZVLW256HEHP-000L7
        Performance
        Product Type Internal Solid State Drive
        Form Factor M.2 2280
        Capacity 256 GB
        Flash Memory Technology Triple Level Cell (TLC)
        Random Read IOPS 250000
        Random Write IOPS 180000
        MTBF 1500000 Hour(s)
        Drive Interface Type PCI Express 3.0 x4
        Other Information
        Features
        TCG Opal 2.0
        APST Support
        L1.2 Mode Support
        NVM Express (NVMe)
        Self-Encrypting Drive (SED)
        Support Admin and NVM Command Set

        Group W (windows, current)
        - ThinkPad T570-20HA, i7-7600U, 2.8GHz, UEFI/GPT, Win10 21H1 Pro x64, 16GB, Sammy 256GB M.2 NVMe PM961. -

      • #2365105
        Ascaris
        AskWoody MVP

        the speed varies from 1.1G down to 800Mbps.

        800 Mbps is 800 megabits per second, which would be a bit under 100 MB/s. Is that what you meant, or did you mean 800 MB (megabytes) per second?

        Varying backup speed is completely normal. Some files are much more compressible than others, and when the source drive is faster than the destination drive, the more compressible files will allow more of the source drive’s speed to show through. Incompressible files like most videos, images, and zip files will be limited by the destination drive’s speed no matter how fast the source drive is. If you are reading from a NVMe drive and writing to a SATA drive, the speed would be closer to that of the NVMe drive when backing up text files, less than that with executables, and close to that of the SATA drive when backing up images or videos.

        Took 9 minutes to back it up where the T530 took 7 minutes.

        You have already indicated that both drives are the same size, but are they equally full, have the same number of partitions, and have the same data on them? There are a lot more factors than the size of the drive to consider.

        Why would this be slower than imaging from a 250gb ssd on my T530?

        Hdtach shows the M.2 speed at 1.2GB/s avg read – FAST.

        That is actually well below what that drive is rated for. It should be reading at close to 2.8 GB/s, according to the specs you posted.

        Did you happen to get a HDTach avg read score for the T530?

        As for the memory configuration… no, that would not account for the speed difference.

         

         

        Group "L" (KDE Neon Linux 5.22.1 User Edition)

        1 user thanked author for this post.
      • #2365108
        Alex5723
        AskWoody Plus

        Why would this be slower than imaging from a 250gb ssd on my T530?

        Smaller sized SSDs are slower than Bigger sized SSDs in read/write.

        1 user thanked author for this post.
      • #2365149
        krism
        AskWoody Plus

        @Ascaris “Did you happen to get a HDTach avg read score for the T530?”
        That would be tough since the T530 is not M.2 capable.
        b or B – I’m just quoting what the app says – Macrium talks b, HDTach talks B.
        I’ll get a pair of memory sticks and try that later.
        Thanks all.

        HDTach is such a beautiful oldie – has to be run with XP compat. 🙂

        Group W (windows, current)
        - ThinkPad T570-20HA, i7-7600U, 2.8GHz, UEFI/GPT, Win10 21H1 Pro x64, 16GB, Sammy 256GB M.2 NVMe PM961. -

        • #2365237
          Ascaris
          AskWoody MVP

          @Ascaris “Did you happen to get a HDTach avg read score for the T530?” That would be tough since the T530 is not M.2 capable.

          Why would it have to be M.2 capable to get a HDTach score? I missed something somewhere.

          I would advise trying something newer, like CrystalDiskMark, even though you really like HDTach (or at least in conjunction with HDTach, to validate its results). It is possible that something that has changed since XP will result in less accurate results when run in compatibility mode compared to actual XP.

          Glad to know that it is solved, though.

           

          Group "L" (KDE Neon Linux 5.22.1 User Edition)

          • #2365250
            krism
            AskWoody Plus

            I thought M.2 was bad. No way to connect M.2 to T530.

            I do have Crystal info and Crystal mark and use them to compare/check.

            Turned out the problem was NOT the adapter, but the Sabrent switchable 4 port hub. It had gone wonky. I will avoid the “switchable” route in the future.

            Hard to find because every time I tested M.2 and 1T sata, they both showed as fine. For some reason a backup showed a problem. Don’t know why but glad I found it. I also found that when this M.2 gives up the ghost I can get a new one for about $50, which is very nice. But that will probably be a few years down the pike.

            Be well.

            Group W (windows, current)
            - ThinkPad T570-20HA, i7-7600U, 2.8GHz, UEFI/GPT, Win10 21H1 Pro x64, 16GB, Sammy 256GB M.2 NVMe PM961. -

      • #2365204
        krism
        AskWoody Plus

        User problem – looking in the wrong direction. M.2 was fine – prob was sabrent little (external case) USB3 to sata adapter. Using another one and it works fine.

        Call it solved.

        Group W (windows, current)
        - ThinkPad T570-20HA, i7-7600U, 2.8GHz, UEFI/GPT, Win10 21H1 Pro x64, 16GB, Sammy 256GB M.2 NVMe PM961. -

      • #2365266
        Alex5723
        AskWoody Plus

        I thought M.2 was bad

        M2 NVMe SSDs are the best storage options. Way faster (up to 7,000 MB/s read/write) then any PCie or SATA SSDs.

        1 user thanked author for this post.
        • #2365375
          krism
          AskWoody Plus

          yes they are! This is my first exposure to them. I had no idea the laptop I bought on ebay would have them. It was/is a VERY pleasant surprise. It FLIES!!!

          Group W (windows, current)
          - ThinkPad T570-20HA, i7-7600U, 2.8GHz, UEFI/GPT, Win10 21H1 Pro x64, 16GB, Sammy 256GB M.2 NVMe PM961. -

    Viewing 7 reply threads

    Please follow the -Lounge Rules- no personal attacks, no swearing, no politics or religion.

    Reply To: variable backup speed with M.2

    You can use BBCodes to format your content.
    Your account can't use Advanced BBCodes, they will be stripped before saving.