Figure Out Read Write Speads on Rpm

hashir2k · Sep 20, 2019

I was wondering: what is the average read write speed of an HDD these days? I have a Maxtor Internal 7.2K RPM HDD, and it is about 7 years old. I too have a 1TB external USB 3.0 WD Hd, which is only half a year sometime. So, I ran a 500MB read write test on my internal and external HDD. Here are the results:

Internal HDD:

View: http/i.imgur.com/KruKLd7.jpg?i

External HDD:

View: http/i.imgur.com/7wsGO9k.jpg?1

Also, what practise all the other iv results hateful?

Thank you!

Solandri · Sep 20, 2019

Not sure how y'all got CrystalDiskMark to produce those results. iii are standard CDM results, 1 is not, and you're missing 1 which is standard.

Sequential is the speed at reading/writing big files. So if you were copying a bunch of 1GB movie files (which weren't fragmented), the sequential speed is what you'd expect. For a mod 7200 RPM drive, it ranges from almost lxxx-160 MB/southward today.

4k is the speed at reading/writing really small files (4KB in size). On many larger drives, this is the smallest cluster size, and so it'due south the lower speed limit. At that place's Bone and drive overhead in locating the file, then the fourth dimension associated with moving the read/write head to the proper location and waiting for the right section of the platter to spin under the head. For a modern drive, it'southward about 0.7-1.iii MB/southward.

QD32 is queue depth of 32. That is, you queue upwards a bunch of read/writes in the drive, and the drive does them as speedily as it can. Information technology doesn't make much difference on HDDs since you're generally limited past the physical speed of the platter and read/write head. On SSDs it can make a huge difference reading minor files, since the time it takes for the drive to transfer the information to the computer can exist a lot longer than the time to read the data. For SSDs, 4k read/write speeds of most 25-lxx MB/due south is typical. With a QD32, this tin can achieve 200-400 MB/s. The bulldoze is reading/writing multiple files in parallel from the perspective of the reckoner.

The benchmark you lot're missing is the 512k scores. This tests speed of 512 KB files, which as you lot can gauge is between the 4k and sequential speeds. This varies a lot from drive to drive (specially for SSDs where I've seen information technology range from 25 - 300 MB/south). It'southward typical of the speed you lot'd await if you were copying a folder full of MP3s or role documents.

External USB 2.0 drives maxed out at virtually 25-30 MB/southward. USB 3.0 drives can theoretically hit over 300 MB/due south, but I've seen poor implementations which have problem exceeding 50 MB/s. Information technology would appear your external drive is one of these. Unless your 1 TB bulldoze is about total?

Solandri · Sep 20, 2019

Non certain how yous got CrystalDiskMark to produce those results. 3 are standard CDM results, i is not, and yous're missing 1 which is standard.

Sequential is the speed at reading/writing large files. So if y'all were copying a bunch of 1GB pic files (which weren't fragmented), the sequential speed is what yous'd expect. For a modern 7200 RPM drive, it ranges from about 80-160 MB/southward today.

4k is the speed at reading/writing really small files (4KB in size). On many larger drives, this is the smallest cluster size, then it's the lower speed limit. There's Os and bulldoze overhead in locating the file, so the fourth dimension associated with moving the read/write caput to the proper location and waiting for the right section of the platter to spin under the head. For a modern bulldoze, it's about 0.7-1.three MB/s.

QD32 is queue depth of 32. That is, you queue up a bunch of read/writes in the drive, and the drive does them as apace as it tin can. It doesn't make much difference on HDDs since you're mostly express by the physical speed of the platter and read/write caput. On SSDs it can brand a huge difference reading pocket-sized files, since the time it takes for the drive to transfer the data to the computer can be a lot longer than the fourth dimension to read the data. For SSDs, 4k read/write speeds of about 25-70 MB/s is typical. With a QD32, this can achieve 200-400 MB/s. The drive is reading/writing multiple files in parallel from the perspective of the computer.

The criterion yous're missing is the 512k scores. This tests speed of 512 KB files, which equally yous can judge is between the 4k and sequential speeds. This varies a lot from drive to drive (specially for SSDs where I've seen it range from 25 - 300 MB/due south). Information technology's typical of the speed you'd look if y'all were copying a folder total of MP3s or function documents.

External USB 2.0 drives maxed out at about 25-thirty MB/s. USB three.0 drives can theoretically hit over 300 MB/southward, but I've seen poor implementations which take trouble exceeding 50 MB/s. It would appear your external drive is one of these. Unless your one TB drive is almost full?

hashir2k · Oct 26, 2012 5 0 10,510 0

Non sure how you got CrystalDiskMark to produce those results. 3 are standard CDM results, 1 is not, and yous're missing one which is standard.

Sequential is the speed at reading/writing big files. So if you were copying a bunch of 1GB movie files (which weren't fragmented), the sequential speed is what you'd expect. For a modern 7200 RPM drive it ranges from well-nigh 80-160 MB/s today.

4k is the speed at reading/writing really pocket-size files (iv kB in size). On many larger drives this is the smallest cluster size, so information technology'south the lower speed limit. At that place's OS and drive overhead in locating the file, then the time associated with moving the read/write caput to the proper location and waiting for the right section of the platter to spin nether the caput. For a modern drive it'due south virtually 0.seven-1.three MB/south.

QD32 is queue depth of 32. That is, y'all queue up a bunch of read/writes in the bulldoze, and the drive does them equally quickly as it can. It doesn't make much divergence on HDDs since yous're mostly limited by the concrete speed of the platter and read/write head. On SSDs it tin make a huge difference reading small files, since fourth dimension it takes for the drive to transfer the data to the computer tin can be a lot longer than the fourth dimension to read the information. For SSDs, 4k read/write speeds of nigh 25-lxx MB/south is typical. With a QD32, this can accomplish 200-400 MB/s. The drive is reading/writing multiple files in parallel from the perspective of the computer.

The benchmark you're missing is the 512k scores. This tests speed of 512 kB files, which as you tin can guess is between the 4k and sequential speeds. This varies a lot from drive to drive (particularly for SSDs where I've seen it range from 25 - 300 MB/s). It's typical of the speed you'd look if you were copying a binder full of MP3s or office documents.

External USB 2.0 drives maxed out at virtually 25-30 MB/s. USB 3.0 drives can theoretically hitting over 300 MB/south, but I've seen poor implementations which take trouble exceeding 50 MB/s. It would appear your external drive is one of these. Unless your ane TB bulldoze is almost full?

Thanks for such a detailed answer! My External HDD has 700GB of infinite left, So no, Information technology isn't full.. And then what you mean to say is my external HDD is slow? Or are they both dull for today'southward standards?

Solandri · Jan 4, 2012 834 4 21,215 374

A modern 2.v" 5400 RPM bulldoze should be able to hit 100 MB/s. If the drive were full, there might be a take chances all the sectors on the outer edge (where more platter area passes per rotation) were total, so the drive was doing sequential speed testing on the inner border. The speed of the inner cylinders is nigh half that of the outer cylinders, which would explain your 50 MB/s speed.

Even so, this is unlikely to be happening since 70% of the disk is empty. So either your bulldoze is very badly fragmented, or the USB 3.0 interface on it is substandard and limiting your speeds to 50 MB/due south.

For the virtually part this isn't a large deal. Only big files like videos transfer at max speed. When copying smaller files like music and office documents, the speed will mostly exist limited to almost 25-50 MB/s on any HDD even if the drive were plugged into a SATA port on a desktop. When transferring really small files (Bone files, config files), you're lucky to get even 10 MB/s. Simply in the time to come when you buy another USB iii.0 HDD, it is something to watch out for.

hashir2k · Oct 26, 2012 5 0 ten,510 0

A modern 2.5" 5400 RPM drive should exist able to hit 100 MB/s. If the drive were full, at that place might be a chance all the sectors on the outer edge (where more than platter surface area passes per rotation) were total, so the drive was doing sequential speed testing on the inner edge. The speed of the inner cylinders is about one-half that of the outer cylinders, which would explain your 50 MB/s speed.

However, this is unlikely to be happening since lxx% of the disk is empty. So either your drive is very desperately fragmented, or the USB 3.0 interface on it is substandard and limiting your speeds to 50 MB/s.

For the near part this isn't a large deal. Simply big files like videos transfer at max speed. When copying smaller files similar music and part documents, the speed will mostly be limited to nearly 25-50 MB/s on any HDD even if the drive were plugged into a SATA port on a desktop. When transferring really small files (OS files, config files), you're lucky to go even 10 MB/s. But in the futurity when you lot purchase another USB 3.0 HDD, it is something to scout out for.

So basically my copy/paste or read/write speed is ok? I mean I install all games on the external drive, And some applications such as Adobe Photoshop are also installed in that location.. My Internal HDD contains Windows. And so practise you think that the Internal HDD might be causing a bottleneck or something? I mean I practise feel ho-hum boots, And the login screen stays black for about 30 sec before showing me the actual login screen.. Do you call up this is acquired by HDD or corrupted windows?

Thanks!

Solandri · Jan 4, 2012 834 4 21,215 374

So basically my copy/paste or read/write speed is ok? I mean I install all games on the external drive, And some applications such as Adobe Photoshop are as well installed there..

Generally you want your Bone and programs on the internal drive. If your programs are on an external bulldoze and you accidentally disconnect it while running the program, information technology could result in loss of whatsoever open files.

Speed-wise, having these on the internal drive would be best. Simply you're not going to lose much speed running them from a USB 3.0 external bulldoze.

My Internal HDD contains Windows. And then do you think that the Internal HDD might be causing a bottleneck or something? I hateful I do feel slow boots, And the login screen stays black for most 30 sec before showing me the actual login screen.. Practise you call back this is caused by HDD or corrupted windows?

That'south usually a symptom of Windows waiting for something at boot-upwardly. Like for a network service or hardware to become available (and after 30 seconds the look times out, it gives upwardly and continues booting.)

Run msconfig or install ccleaner and get to the Startup page. Look for whatsoever services or programs which don't expect important (similar Acrobat'south preloader, or the little app which constantly checks for updates to your printer commuter). Disable them. I had good luck with Soluto in the past in diagnosing boring kick times, but that was years ago and I haven't had to use it recently so I can't say if it's all the same good.

By far the biggest improvement you tin brand is to supersede your Bone HDD with a SSD.

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Figure Out Read Write Speads on Rpm

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