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brymerr921
Serial Port
Posts: 27
Registered: ‎05-09-2014
Location: United States
Views: 12,636
Message 1 of 24

HDD write speeds are suddenly slow...

Hi, I have a T540p that has a 500 GB 7200 RPM hard drive in it. Previously, it would read and write near 100 MB/sec, which is to be expected.

 

However, recently it will only give me 90 MB/sec sequential read speed and 40 MB/sec sequential write. My external USB 3 hard drive is giving me 175 MB/sec read and 150 MB/sec write. Why is my internal hard drive so slow?

 

I can't find many tips on the internet but I've tried optimizing my drives, I've ran diagnostics on the hard drive, I've ran a virus scanner, I've done all my windows updates, I've checked the drive for errors but nothing has changed.

 

At what point do I reinstall the OS? Will that do anything? Should I send the drive back?

 

Thanks for your help.

Guru
Posts: 9,598
Registered: ‎12-26-2009
Location: CA
Views: 12,633
Message 2 of 24

Re: HDD write speeds are suddenly slow...

What are you benchmarking with?

A drive will tend to slowdown as you fill it with more data. Defragmenting will mostly alleviate this issue.

W520: 2960XM, Q2000M @ 1091/1380, 32GB RAM, 500GB&750GB HDD & 500GB SSD, FHD&MB168B+
X61T: L7500, 4GB RAM, 500GB HDD, XGA screen, Ultrabase
W550s: 5600U, K620M at 1164/1281, 16GB RAM, 512GB SSD, 3K touchscreen
X200s: SL9400, 6GB RAM, 64GB SD card, WXGA+ screen
TPT1: 1839-23U
brymerr921
Serial Port
Posts: 27
Registered: ‎05-09-2014
Location: United States
Views: 12,626
Message 3 of 24

Re: HDD write speeds are suddenly slow...

I'm using CrystalDiskMark and ATTO. I optimized my drives recently. Currently it says 1% fragmented. It is just over halfway full.

 

Atto.JPG

Internal HD 500gb 7200rpm.JPG

Guru
Posts: 9,598
Registered: ‎12-26-2009
Location: CA
Views: 12,619
Message 4 of 24

Re: HDD write speeds are suddenly slow...

Did you make any changes to your drivers recently?

Check the S.M.A.R.T. health of the drive using something like HD Tune too.

W520: 2960XM, Q2000M @ 1091/1380, 32GB RAM, 500GB&750GB HDD & 500GB SSD, FHD&MB168B+
X61T: L7500, 4GB RAM, 500GB HDD, XGA screen, Ultrabase
W550s: 5600U, K620M at 1164/1281, 16GB RAM, 512GB SSD, 3K touchscreen
X200s: SL9400, 6GB RAM, 64GB SD card, WXGA+ screen
TPT1: 1839-23U
brymerr921
Serial Port
Posts: 27
Registered: ‎05-09-2014
Location: United States
Views: 12,613
Message 5 of 24

Re: HDD write speeds are suddenly slow...

Not that I know of. I installed a M.2 64gb cache drive and the FNET caching software but when I ran crystal disk mark and noticed that I was only getting 40 MB/sec write speeds I removed the cache drive, uninstalled the software, and did a system restore thinking the decrease in performance was related to the cache drive. That didn't help.

 

The SMART health says the drive is fine.

brymerr921
Serial Port
Posts: 27
Registered: ‎05-09-2014
Location: United States
Views: 12,601
Message 6 of 24

Re: HDD write speeds are suddenly slow...

However, I did notice that for some reason when using PassMark disk checkup it says this drive is not Sata 3 compliant... why would that be? Could this be why it is running so slow?

Guru
Posts: 9,598
Registered: ‎12-26-2009
Location: CA
Views: 12,592
Message 7 of 24

Re: HDD write speeds are suddenly slow...

Caching shouldn't slow down the drive. It also won't register a speed on a cache-agnostic benchmark like CrystalDiskMark.

Are there no "reallocated sectors" or "current pending sectors"?

Spinning hard drives are usually not SATA III compliant because they don't need to be; they're barely exceeding SATA I limits.

One way to eliminate the hardware as a point of failure would be to run the benchmark with the drive hooked up as a secondary drive to eliminate the interference of a running system. This could also be done using a bootable Linux CD or a WinPE environment.

W520: 2960XM, Q2000M @ 1091/1380, 32GB RAM, 500GB&750GB HDD & 500GB SSD, FHD&MB168B+
X61T: L7500, 4GB RAM, 500GB HDD, XGA screen, Ultrabase
W550s: 5600U, K620M at 1164/1281, 16GB RAM, 512GB SSD, 3K touchscreen
X200s: SL9400, 6GB RAM, 64GB SD card, WXGA+ screen
TPT1: 1839-23U
brymerr921
Serial Port
Posts: 27
Registered: ‎05-09-2014
Location: United States
Views: 12,565
Message 8 of 24

Re: HDD write speeds are suddenly slow...

Thanks, I'll give that a shot.

brymerr921
Serial Port
Posts: 27
Registered: ‎05-09-2014
Location: United States
Views: 12,556
Message 9 of 24

Re: HDD write speeds are suddenly slow...

I ran a benchmark using a bootable USB flash drive and it said the average read speed was 109 MB/sec (which is good) and the average write speed was 56 MB/sec which is much slower than it was a month ago when I bought this laptop.

 

There are no "reallocated sectors" or "current pending sectors."

 

All indications say that the drive is healthy and I can't figure out why it is writing so slow (comparatively) from when I got it. I intended this machine to be very fast (I realize that a spinning hard drive is a bottleneck) but that missing 30-40 MB/sec write speed has really got me puzzled.

Skoop
Bit Torrent
Posts: 705
Registered: ‎11-21-2013
Location: US
Views: 12,544
Message 10 of 24

Re: HDD write speeds are suddenly slow...

<I intended this machine to be very fast (I realize that a spinning hard drive is a bottleneck)>

 

I know that you know this, but in the era of SSDs, that drive is never going to be fast. 

 

Not trying to be snarky at you.  Get a Samsung and don't look back.  Smiley Wink

 

And for content, I would be suspicious of that drive's controller given the change and that you're in touch with your hardware in an informed way.

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