SPOILER ALERT!
***
Inside the information age, using the improve of network bandwidth, the game capacity is receiving bigger and bigger, as well as the on line high-definition film sources are also often dozens of G, plus a range of fragmented mastering components, this time the personal computer is equipped with 1T The capacity of 2T mechanical tough disk is actually a little stretched. Much more and more person customers have started to set up house NAS (network storage equipment) to meet the escalating personal storage requires.
In view of price and longevity, most personal NAS presently use several mechanical really hard disks to type a RAID to balance information capacity and security. Numerous really hard disk makers have also introduced specific disks with huge capacity and high stability appropriate for storage devices, but recently the Western Digital NAS red disk has 'overturned'. The result in is the fact that the Western Digital Red Disk reported RAID errors within the NAS, and it was pulled out that Western Digital mixed SMR and CMR magnetic recording technologies within the Red Disk. This news caused a hot discussion among netizens. Subsequently, Western Digital had to admit that the difficult drives were mixed and announced the certain model of SMR challenging drives. Then Toshiba and Seagate also admitted that they employed two magnetic recording technologies in many solution lines.
What's SMR technologies? What effect does SMR technologies have on mechanical hard drives?
The HDD (mechanical hard disk) we use now is derived from the IBM Wenshi difficult disk extra than 60 years ago, along with the information recorded is definitely the disk in the hard disk. It is best to generally hear the 3 terms CMR (traditional magnetic recording), PMR (perpendicular magnetic recording) and SMR (shingled magnetic recording), that are speaking about the sorts of magnetic recording technology.
Here we should initially sort out the relationship in between various magnetic disk recording technologies
By far the most typical issue you hear in regards to the PMR challenging drive would be the SMR hard drive, but this really is essentially inaccurate. Because SMR shingled technologies will make the random study and write functionality of mechanical really hard drives worse, in many instances companies are reluctant to clearly mark them. Seagate is the earliest manufacturer to promote the idea of PMR so that you can market its personal SMR challenging drives, the goal will be to let shoppers Confused PMR and CMR. The opposite of PMR need to be HAMR and MAMR, and also the latter two have been pigeons for a lot of years, so there is certainly practically nothing incorrect with promoting SMR really hard disks as PMR so-called vertical really hard disks, simply because primarily CMR and SMR belong to PMR ( Perpendicular magnetic recording), leading buyers to consider that PMR is equal to CMR, but makers mean that PMR can also be equal to SMR.
The greatest difference between the SMR difficult disk plus the standard CMR tough disk is that he makes use of the empty tracks in the CMR challenging disk, so that the create tracks are closely arranged and overlapped, just like the roof tiles, every single tile must be pressed against the other tiles. . The greatest benefit of SMR is that it greatly increases the storage density. The existing SMR technology fully increases the capacity of HDD hard disks by 25%. The raise in capacity indicates the reduction of fees. Therefore, significant companies are actively promoting the popularization of SMR tough disks.
Having said that, while the capacity of SMR tough drives has elevated, they've also paid a cost in efficiency. The primary influence may be the functionality when rewriting data. For writing, the original redundant track space has been recovered, which results in the use of SMR technology to write information towards the information from the track to become rewritten, even though writing the current track For data, the information of the following tracks have to be corrected, so normally SMR technologies challenging disks are equipped having a large cache, but even when there is a big cache, the create functionality won't be lowered.
For NAS with higher stability and random study and write specifications, the use of SMR hard drives will seriously have an effect on functionality, and based on feedback from netizens, the failure price of challenging drives will also be enhanced. Western Digital has often denied the fact that its red disk utilizes SMR, so it is actually exposed Afterwards, he was 'beaten' by numerous netizens.
Not all usage scenarios will not be appropriate for SMR
As mentioned earlier, SMR challenging drives are certainly not suitable for NAS, as well as the random study and create functionality is poor and in some cases the service life is just not lengthy. Isn't all use scenarios unsuitable for SMR hard drives? It happens that the editor has two Seagate Barracuda 2T tough drives, one particular ST2000M006 (7200 rpm, CMR) and one ST2000DM005 (5400 rpm, SMR), each of which are utilized as warehouse disks, and each are within a complete state. The only regret is the fact that a single challenging drive is 7200 rpm and a single is 5400 rpm, so the following is actually a comparison with the use of CMR and SMR really hard drives.
1st use HDTunePro to test the reading efficiency (ps: not empty disk, so only test reading), CMR, SMR
Ignoring the difference in the reading speed attributable to the speed in the difficult disk, it might also be clearly observed in the curve that the reading curve from the CMR hard disk is smoother, although the SMR hard disk has periodic fluctuations due to cache waiting, and on account of the larger storage density, The really hard disk seek time (20.2ms) is also higher than the CMR hard disk (15.5ms).
Judging in the actual use knowledge from the two really hard drives, there is not a great deal difference in between reading and writing. What's intriguing is that the functionality of small file writing is even higher than that of CMR tough drives because of the substantial cache support of SMR tough drives. However, there is certainly also a really serious dilemma with SMR difficult disks, that is, when BT downloading is performed, it is going to seriously impact the reading functionality, and even when watching HD motion pictures in the difficult disk even though downloading, there will likely be a stuck phenomenon.
In SD Card accidentally deleted Video recovery software , SMR hard drives use fewer discs to attain higher storage capacity, which is effective to companies and shoppers when it comes to cost. In terms of functionality and use, it's not appropriate for NAS. Scenarios that demand large random reads and writes are usually not suitable for program disks, software program disks, game disks, and download disks. The only applicable scenes seem to be left unused. The warehouse disk from the information has been modified.
CMR tough drive pit avoidance, obtain guide
Given that you can find countless disadvantages of CMR tough drives, is it essential to invest in them? It is accurate that even if the domestic solid-state hard drives are finding more affordable, even the living space of 2t mechanical really hard drives may very well be squeezed, but mechanical difficult drives nevertheless have advantages when it comes to life and stability. The safety of your a lot more essential files or information within the mechanical difficult disk is certainly larger than that within the solid state challenging disk. You do n’t desire to wake up the 'Miss Sister' in the hard disk suddenly disappear?
The birth defects of SMR challenging disks seriously limit its usage scenarios, and at present can only be applied as warehouse disks. In the identical time, the popularization of SMR technology is often a common trend. Compared with all the confusion of suppliers, what exactly is far more unacceptable is that the reduction in hard drive costs doesn't bring a lot more cost-effective solutions. The distinction involving CMR and SMR is far from the gap involving cost and overall performance reduction.
Knock around the blackboard! Should you have a group of NAS or perhaps a compact partner who wants to purchase a CMR hard drive that balances capacity and functionality, you'll want to pay attention. The following editors bring you 3.5-inch home and NAS devoted disks at present sold by JD.com depending on the information and facts released by major suppliers. To get a summary with the types of recording technologies, you could refer to it once you obtain to avoid stepping on thunder.
Seagate
Additionally for the Pro series, Kuyu can only be employed as a warehouse tray. Cool wolf is often purchased at will
Western Digital
The 4T blue disk will not be certainly one of essentially the most cost-effective. The red disk is frustrated and utilised as a NAS to buy meticulously
Toshiba
P300 (HDWD) series 4T and 6T are SMR but not sold by JD.com
(Edit: hnm)
In view of price and longevity, most personal NAS presently use several mechanical really hard disks to type a RAID to balance information capacity and security. Numerous really hard disk makers have also introduced specific disks with huge capacity and high stability appropriate for storage devices, but recently the Western Digital NAS red disk has 'overturned'. The result in is the fact that the Western Digital Red Disk reported RAID errors within the NAS, and it was pulled out that Western Digital mixed SMR and CMR magnetic recording technologies within the Red Disk. This news caused a hot discussion among netizens. Subsequently, Western Digital had to admit that the difficult drives were mixed and announced the certain model of SMR challenging drives. Then Toshiba and Seagate also admitted that they employed two magnetic recording technologies in many solution lines.
What's SMR technologies? What effect does SMR technologies have on mechanical hard drives?
The HDD (mechanical hard disk) we use now is derived from the IBM Wenshi difficult disk extra than 60 years ago, along with the information recorded is definitely the disk in the hard disk. It is best to generally hear the 3 terms CMR (traditional magnetic recording), PMR (perpendicular magnetic recording) and SMR (shingled magnetic recording), that are speaking about the sorts of magnetic recording technology.
Here we should initially sort out the relationship in between various magnetic disk recording technologies
By far the most typical issue you hear in regards to the PMR challenging drive would be the SMR hard drive, but this really is essentially inaccurate. Because SMR shingled technologies will make the random study and write functionality of mechanical really hard drives worse, in many instances companies are reluctant to clearly mark them. Seagate is the earliest manufacturer to promote the idea of PMR so that you can market its personal SMR challenging drives, the goal will be to let shoppers Confused PMR and CMR. The opposite of PMR need to be HAMR and MAMR, and also the latter two have been pigeons for a lot of years, so there is certainly practically nothing incorrect with promoting SMR really hard disks as PMR so-called vertical really hard disks, simply because primarily CMR and SMR belong to PMR ( Perpendicular magnetic recording), leading buyers to consider that PMR is equal to CMR, but makers mean that PMR can also be equal to SMR.
The greatest difference between the SMR difficult disk plus the standard CMR tough disk is that he makes use of the empty tracks in the CMR challenging disk, so that the create tracks are closely arranged and overlapped, just like the roof tiles, every single tile must be pressed against the other tiles. . The greatest benefit of SMR is that it greatly increases the storage density. The existing SMR technology fully increases the capacity of HDD hard disks by 25%. The raise in capacity indicates the reduction of fees. Therefore, significant companies are actively promoting the popularization of SMR tough disks.
Having said that, while the capacity of SMR tough drives has elevated, they've also paid a cost in efficiency. The primary influence may be the functionality when rewriting data. For writing, the original redundant track space has been recovered, which results in the use of SMR technology to write information towards the information from the track to become rewritten, even though writing the current track For data, the information of the following tracks have to be corrected, so normally SMR technologies challenging disks are equipped having a large cache, but even when there is a big cache, the create functionality won't be lowered.
For NAS with higher stability and random study and write specifications, the use of SMR hard drives will seriously have an effect on functionality, and based on feedback from netizens, the failure price of challenging drives will also be enhanced. Western Digital has often denied the fact that its red disk utilizes SMR, so it is actually exposed Afterwards, he was 'beaten' by numerous netizens.
Not all usage scenarios will not be appropriate for SMR
As mentioned earlier, SMR challenging drives are certainly not suitable for NAS, as well as the random study and create functionality is poor and in some cases the service life is just not lengthy. Isn't all use scenarios unsuitable for SMR hard drives? It happens that the editor has two Seagate Barracuda 2T tough drives, one particular ST2000M006 (7200 rpm, CMR) and one ST2000DM005 (5400 rpm, SMR), each of which are utilized as warehouse disks, and each are within a complete state. The only regret is the fact that a single challenging drive is 7200 rpm and a single is 5400 rpm, so the following is actually a comparison with the use of CMR and SMR really hard drives.
1st use HDTunePro to test the reading efficiency (ps: not empty disk, so only test reading), CMR, SMR
Ignoring the difference in the reading speed attributable to the speed in the difficult disk, it might also be clearly observed in the curve that the reading curve from the CMR hard disk is smoother, although the SMR hard disk has periodic fluctuations due to cache waiting, and on account of the larger storage density, The really hard disk seek time (20.2ms) is also higher than the CMR hard disk (15.5ms).
Judging in the actual use knowledge from the two really hard drives, there is not a great deal difference in between reading and writing. What's intriguing is that the functionality of small file writing is even higher than that of CMR tough drives because of the substantial cache support of SMR tough drives. However, there is certainly also a really serious dilemma with SMR difficult disks, that is, when BT downloading is performed, it is going to seriously impact the reading functionality, and even when watching HD motion pictures in the difficult disk even though downloading, there will likely be a stuck phenomenon.
In SD Card accidentally deleted Video recovery software , SMR hard drives use fewer discs to attain higher storage capacity, which is effective to companies and shoppers when it comes to cost. In terms of functionality and use, it's not appropriate for NAS. Scenarios that demand large random reads and writes are usually not suitable for program disks, software program disks, game disks, and download disks. The only applicable scenes seem to be left unused. The warehouse disk from the information has been modified.
CMR tough drive pit avoidance, obtain guide
Given that you can find countless disadvantages of CMR tough drives, is it essential to invest in them? It is accurate that even if the domestic solid-state hard drives are finding more affordable, even the living space of 2t mechanical really hard drives may very well be squeezed, but mechanical difficult drives nevertheless have advantages when it comes to life and stability. The safety of your a lot more essential files or information within the mechanical difficult disk is certainly larger than that within the solid state challenging disk. You do n’t desire to wake up the 'Miss Sister' in the hard disk suddenly disappear?
The birth defects of SMR challenging disks seriously limit its usage scenarios, and at present can only be applied as warehouse disks. In the identical time, the popularization of SMR technology is often a common trend. Compared with all the confusion of suppliers, what exactly is far more unacceptable is that the reduction in hard drive costs doesn't bring a lot more cost-effective solutions. The distinction involving CMR and SMR is far from the gap involving cost and overall performance reduction.
Knock around the blackboard! Should you have a group of NAS or perhaps a compact partner who wants to purchase a CMR hard drive that balances capacity and functionality, you'll want to pay attention. The following editors bring you 3.5-inch home and NAS devoted disks at present sold by JD.com depending on the information and facts released by major suppliers. To get a summary with the types of recording technologies, you could refer to it once you obtain to avoid stepping on thunder.
Seagate
Additionally for the Pro series, Kuyu can only be employed as a warehouse tray. Cool wolf is often purchased at will
Western Digital
The 4T blue disk will not be certainly one of essentially the most cost-effective. The red disk is frustrated and utilised as a NAS to buy meticulously
Toshiba
P300 (HDWD) series 4T and 6T are SMR but not sold by JD.com
(Edit: hnm)
