Copying from an Evo 850 to a 4tb Server grade hard drive

[debiruman665]

I'm backing up all my files in prep for a clean wipe and windows install. I have this 4TB hard drive that I "acquired" *cough* from a rack that I decommissioned at my old job.

I've had it sitting in a portable hard drive container.

I'm pretty shocked at this.

the Server hard drive even though its using a usb2 connection it's barely breaking a sweat

Can anyone have a look at the output from HWinfo and let me know what's making this drive so special?

also here is the drive being sold on a store

MB4000GCWDC HP G8 G9 4-TB 6G 7.2K 3.5 SATA SC

HP 4TB 3.5-inch LFF SATA 6Gb/s 7.2K RPM<br> 512n Midline (MDL) Hot-Plug Hard Drive<br> In G8 G9 (Gen8 Gen9) 3.5-inch LFF<br> <b>SmartDrive Carrier (SC)</b> (as pictured)<br> For HP G8 G9 Proliant SATA Servers and Storage Arrays<br> Genuine HP serial number and firmware<br> Genuine HP...

www.harddrivesdirect.com

 

[ubuysa]

At a guess it's because you're writing sequentially to an empty drive. There is thus no latency or set sector times to speak of, so the drive can operate at near data transfer speeds.

The 16.7 MB/s reported there is about 134 Mb/s, which is pretty pedestrian for an HDD data transfer rate.

What value is being shown in the two drive graphs? It can't be active time because I'd expect the destination drive to be 100% active.

 

[debiruman665]

Tried to pause it exactly on one of the moments where the write time peaked really high.

 

[ubuysa]

There's really nothing startling about that latest graph. I'm not sure what your asking here?

 

[debiruman665]

There's really nothing startling about that latest graph. I'm not sure what your asking here?

The discrepancy between activity time. I would have expected the destination drive to max out long before the source one did on account of the destination being a HDD and also in a usb enclosure.

They way I'm interpreting it is that the hdd has a lot more headroom to perform more reads/writes, which I wouldn't expect.

 

[ubuysa]

The discrepancy between activity time. I would have expected the destination drive to max out long before the source one did on account of the destination being a HDD and also in a usb enclosure.

They way I'm interpreting it is that the hdd has a lot more headroom to perform more reads/writes, which I wouldn't expect.

Ah, I see. I agree that you'd expect the HDD to max out. That it doesn't is because something is getting in the way, perhaps other proceeses accessing the SSD and slowing the reads?

 

[debiruman665]

Once this big transfer of my steam library is done, I'll do an atto disk benchmark on it and see what comes up.

 

[ubuysa]

Once this big transfer of my steam library is done, I'll do an atto disk benchmark on it and see what comes up.

Excellent idea, post the results if you like. [emoji846]

If you know your way around the performance monitor you can try to spot what's holding it back.

 

[debiruman665]

I think hwinfo isn't giving the actual correct readings for the disk, Likely because of the enclosure.

it's actually 750MB/s transfer speed probably held back by the enclosure and usb connection.