Low HDD speed

Jenish Shaikh · Aug 1, 2014

I bought HDD today after seeing 210 mb data transfer speed and I/O transfer rate is 600 mb, bout i got only 50 Mb transfer rate of this HDD, plz help, what is the problem? I expect around 100 mb per second speed. so plz help

Seagate 1TB Desktop Internal Sata Drive (ST1000DM003)

Here is link which you can see specification

http://www.snapdeal.com/product/seagate-1tb-desktop-internal-sata/786850832

FoxVoxDK · Aug 1, 2014

Yea, that's to be expected, those 210MB/s is a continuous non-fragmented file burst read.

The avg. transfer rate of most large capacity drives, is in the order of 30-90MB/s.

Here's the actual performance in a review.

Jenish Shaikh · Aug 1, 2014

yeah thanks buddy, but can you tell me further , what i can expect speed when i copy from one partition to other partition? have i got minimum 100 mb speed? because i got only 50 to 55 mb speed when i copied from one partition to another. is this things ri8?

FoxVoxDK · Aug 1, 2014

Well aren't you a nice person to have a conversation with.

"Yeah thanks buddy."

What do you think happens when one needle has to move back and forth to first read and then write? Does it cut the performance in half or double it?

Jenish Shaikh · Aug 1, 2014

i got only 1/4 rth performance only from starting, its starting with 300 mb then after 20 second reached at 50 to 55 mb write speed.

FoxVoxDK · Aug 1, 2014

Yea, that's called burst reads and writes, it is what the buffer is used for. The HDD is working fine, but it's not exactly helping when you transfer across the same drive, that you just partitioned. The 210 MB/s is not a constant transfer rate of that HDD, I just told you. It's peak performance from buffer and continuous file and will only last a few seconds. If you transferred from one PHYSICAL HDD to another, you might see 80-100MB/s, that is IF the other HDD is fast enough to write that fast.

Jenish Shaikh · Aug 1, 2014

i have only 1 tb, so can i expect a data rate only 50 to 55 which you already said that large hdd have only 30 to 90 mb, so i have no fault in model?

FoxVoxDK · Aug 1, 2014

Not that I can see, no. It's in good working order.

Jenish Shaikh · Aug 1, 2014

ohh thank you very much, appreciate your help, its really so kind. i thought i got wrong model of hdd LOLLL so will u suggest me another HDD which have 100 mb per second speed minimum, i have no worry for price....

Jenish Shaikh · Aug 1, 2014

FoxVoxDK :

oh thnx for this, now i completely understand which you said, write, read and buffer about.. i got u

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