yup, a bit noisy , but worth it lor, my black re4 found bad sector last month after 3yr plus usage 24/7, if it was blue, wrty aldy no more loh.

super macgyver Do you know or a way to reduce WD Black speed to 7200rpm like the Blue ?
So , noise reduce , but warranty is 5 years
Any firmware which can manually set hard disk rotation speed ?

Hey there Maxieos,

Just would like to share to you in regards to changing the RPM in a drive.

Changing the actual RPM is not possible. Modern drive heads float over the surface of the disk and do all of their work without ever physically touching the platters, they are magnetizing. The amount of space between the heads and the platters is called the floating height or flying height. It is also sometimes called the head gap, and some hard disk manufacturers refer to the heads as riding on an "air bearing". The read/write head assemblies are spring-loaded--using the spring steel of the head arms--which causes the sliders to press against the platters when the disk is stationary. (This is done to ensure that the heads don't drift away from the platters; maintaining an exact floating height is essential for correct operation.) When the disk spins up to operating speed, the high speed causes air to flow under the sliders and lift them off the surface of the disk--the same principle of lift that operates on aircraft wings and enables them to fly.

The distance from the platters to the heads is a specific design parameter that is tightly controlled by the engineers that create the drive. By adjusting the strength of the springs to match the other drive parameters (such as the speed the disks are spinning and the size and shape of the heads) the float height can be precisely maintained.

I think it would be safe to assume that changing the speed of rotation of the platter, would also affect the amount of lift created and would either cause the heads to float to high, to the point where it could not read from the disk, or too low and could cause a head crash.

If let say you are using Linux system, have a look at hdparm utility. Unfortunately, it doesn't allow you change HDD RPM but it allows you change some low-level performance options. Be careful, some options could be dangerous.

http://en.wikipedia.org/wiki/Hdparm

Just a thought of sharing, hope you find this information useful.

elliot_WD Thanks , guess it's more risky doing that.

super macgyver What kind to software you use to check for bad sector ? 1TB takes so long where last time i tried 500GB takes 6-7 hours to scan .

Hey Maxieos,

Yup, it's definitely a risky one.

Well, alternatively you could try running the DLG(Data Lifeguard Diagnostics) for your drive to determine the health status. Just bear in mind that for DLG, it can only help to read the status and not fix any bad sectors. Here is the link on how to do so:

http://products.wdc.com/support/kb.ashx?id=4rQJdl

Please do share to us the test results.

This post has been edited by elliot_WD: Aug 11 2015, 07:43 AM

elliot_WD If using SMART test vs DLG , which one is more better ?

This post has been edited by Moogle Stiltzkin: Jul 16 2017, 04:09 PM

my previous re4 500gb dun have noise after i set it quiet mode in AAM under hd tune, but new re4 1tb hdd seem like no longer support AAM control

i use hd tune

Hey there Moogle Stiltzkin

If you have checked the HDD health status, and found that “CAUTION” is written under Health Status, it can be a bad sector on HDD.

Sectors are reallocated when they’ve gone bad (a hardware fault on the drive). Modern drives are built with spare sectors precisely for this purpose, but a large number of reallocated sectors indicates that there is a more serious problem with the drive and it is likely to fail soon. This is also likely to contribute to the slowness of your PC.

Alternatively you could try running the DLG(Data Lifeguard Diagnostics) for your HDD just to double confirm on that. Here is the link on how to do so:
http://products.wdc.com/support/kb.ashx?id=4rQJdl

The best option now is to backup all your data from your HDD if possible before it fails catastrophically, and if the HDD is still under warranty, then you can proceed to RMA it.

Hope you find this information useful, good luck.

Hey there Maxieos

I would rather say that both feed the same purpose which is to run a test to determine the HDD status. SMART test is more to like checking all the hardware whereby the DLG is more specific in HDD. With the DLG you can run more than just a SMART test which is the EXTENDED TEST.

This test performs a Full Media Scan to detect bad sectors. This particular test may take several hours to complete depending on the size of the drive but then it will give you a full review on your drive.

This post has been edited by Moogle Stiltzkin: Jul 16 2017, 04:14 PM

This post has been edited by Moogle Stiltzkin: Jul 16 2017, 04:15 PM

hi..

i want to ask abaut Lenovo F309 Lenovo USB 3.0 1TB external portable HDD... i just knew about this brand for harddisk.. is it good? how about the performance and warranty process?

and how about other new brand in harddisk segment? we save our important data..so i want to know about their reputation... some of them selling cheap than other brand...also selling cheap at lazada..

thank you very much for your time to answer...

internally it is using Toshiba 5400rpm hard disk. performance is same as any other USB3.0 external drives in the market.

thank you very for your answer....

so other normal external harddisk is using 5400rpm speed? any outside link that i can read more about this topic?

hi..selamat sejahtera... hopefully u guys have a great life..

alhamdulillah, Thanks a lot to God ...i just open my email and i got good news that i won WD 4TB Black... maybe i will receive in next week...

so i want to know what my best option for my situation....

i just use old P4 3.0 HT IBM system...4gb RAM ddr2, 1 gb ddr3 VGA... and 500gb wd harddisk..

so i think i want to make the new 4gb harddisk as external harddisk... what the best spec that i must buy for external casing and brand to maximize the new disk?

and if i want to sell it, how much should i sell it? i just a regular internet user and some download movie and software... maybe the money i can use for new external harddisk..

thank you very much for your help to guide me... sory for bad english grammar... thats why i seldom write on lowyat forum even i joined since jan 2003...

This post has been edited by azmieza: Aug 20 2015, 09:52 AM

2.5" external hdd usually uses 5400rpm hdd due to less power consumption that suits USB 500mA specs, 7200rpm drives usually consumes around 700mA. even if it spins at 7,200rpm, it will still be bottlenecked by USB interface, therefore makes no difference in this aspect.

thank you very much for your concern...

so how about my new WD 4TB Black harddisk? its 7200rpm..

This post has been edited by Moogle Stiltzkin: Jul 16 2017, 04:15 PM

thank you very much for your reply...

as a normal user, i dont think i want to use the NAS technology and other advance technology... i just love to read about technolgy but dont have enough money to try use it...... huhuhuhu..

some time if i use my friend powerfull computer that i help him to buy because of my little knowledge, also i dont know what to do to maximize it power... i dont play games, dont know much about video ,picture editing... so my ancient system is far enough for now, maybe in future i will upgrade...

wd 4tb black is for video processing, gamers...new price is about rm800... normal external casing is rm100... maybe i want to sell it when i get it next week.. i won it from amanz.my website..

confuse..