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Transferring large files to USB hard disk


banger

New Member
Member
UK

Posts
150
#1
Hi

I am transferring a large backup file 229 GB from internal HDD to USB HDD. Halfway through the transfer the transfer rate slows from 25 mb/s to about 8 mb/s. So I pause the transfer on the dialog and it restarts at 25 mb/s. If I had left it it would have taken ages to complete at 8 mb/s. Any ideas why it dropped and why pausing got it back to full speed?

Tim
 

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#2
Hi mine does that too it drops when it gets to a big file or the disk is getting used by something else when you pause it the computer must start using paging file in the ram so when you start it's fullspeed again till something else lags it are you running just a desk top plug and play drive or a powered dock type?
 

My Computer

System One

  • OS
    win 7/8.1
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    DELL X51 R2 & HP DV6
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#4

My Computer

System One

  • OS
    win 7/8.1
    Computer type
    PC/Desktop
    System Manufacturer/Model Number
    DELL X51 R2 & HP DV6
    CPU
    i7-4770 3.4GHz
    Motherboard
    stock
    Memory
    16gb ddr3
    Graphics Card(s)
    GeForce GTX 660
    Monitor(s) Displays
    1 small one
    Screen Resolution
    crap
    Hard Drives
    1 x 2TB internal HDD
    1 x 2TB external HDD
    1 x 16Gb share drive via router( just for uploads from fone when not home )
    Case
    stock
    Cooling
    air
    Internet Speed
    adsl 17M/s down ( never seen it though)
    Browser
    google chrome
    Antivirus
    avg
    Other Info
    HP DV6 Networked direct to main computer via LAN
    Netgear D6200/ac1200 modem/router
    42 inch screen(coming soon)

whs

New Member
VIP Member
Guru
Germany/Florida

Posts
4,514
#5
The SSHDs are very good for sequential write/read of large files. They are not so good as system drives - compared to SSDs. A system drive lives on very fast random accees time where a spinning disk cannot match a SSD - in fact it is appr. 150 times slower.

I have made a performance comparison (SSHD, SSD and HDD) writing images. That is a sequential write operation:

SSHD - Performance comparison with HDD and SSD - Windows 7 Help Forums
 

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bassfacer22

Banned
Member
Posts
209
#6
now i have this m.2 ngff 42mm ssd cards.. I am thinking about using that for windows 8.1 install and using a regular samsung 840 evo for applications and data.. have you run any tests using m.2 ngff 42mm cards? i currently have a mydigitalssd super cache 2 m.2 card.. only 64 gigs but that will hold windows 8.1 no problem.. i just haven't determined if it will be better to put windows on my 840 evo SSD or the mini m.2 ngff 42mm card..
 

My Computer

System One

  • OS
    Windows 8.1 (HOME not Pro) 64bit
    Computer type
    Laptop
    System Manufacturer/Model Number
    (So not very nice) Lenovo Y410P
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    i7 quad 2.4Gig
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    16G ram
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    nvidia 2gig 755m
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    Samsung 840 Evo

    supercache2 m2. mini card.
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whs

New Member
VIP Member
Guru
Germany/Florida

Posts
4,514
#7
I never used such a card. But if I understand that right, they are only a PCI-e interface for the SSD (rather than a normal Sata port). I would first check whether the card is compatible with my PC.

M.2 NGFF SSD Compatibility List | My Digital Discount

Then I would still prefer a traditional SSD installation. Is probably less trouble.
 

My Computer

System One

  • OS
    Vista and Win7
    System Manufacturer/Model Number
    2xHP, 2xGateway, 1xDell, 1xSony
    Hard Drives
    5 SSDs and 12 HDs

bassfacer22

Banned
Member
Posts
209
#8
i've already read that some people have installed windows to the m.2 NGFF mini cards... i have a 64 gig mydigital ssd and I updated the firmware (which froze on me and i thought i lost it but when i restarted it appeared to update the firmware??)

so anyway, I was thinking to put windows 8.1 on the m.2 64 gig and just leave that for some small applications and windows only.. and then use my samsung 840 evo 250gig (which is still too small) for games/big applications..
 

My Computer

System One

  • OS
    Windows 8.1 (HOME not Pro) 64bit
    Computer type
    Laptop
    System Manufacturer/Model Number
    (So not very nice) Lenovo Y410P
    CPU
    i7 quad 2.4Gig
    Memory
    16G ram
    Graphics Card(s)
    nvidia 2gig 755m
    Hard Drives
    Samsung 840 Evo

    supercache2 m2. mini card.
    Antivirus
    Win Defender