Which is better, CMR vs SMR? When determining which hard disc to purchase for a particular purpose, a large number of people question this concern. Owing to the notion that diverse capturing techniques perform significantly and might, consequently, sometimes be superior and usually worse for the intended purpose.

Therefore, this article will explain to you SMR and CMR drives and discuss how to differentiate between them.

CMR VS SMR: Explanationcmr vs smr

CMR (Conventional Magnetic Recording)

Conventional Magnetic Recording is formerly known as PMR (Perpendicular Magnetic Recording). Without having to rewrite or transfer any current data, CMR technology enables information to be written to free regions of the computer’s hard drive. 

Plates are magnetic both vertically and horizontally. Without initially writing the data back onto the hard drive, it is feasible to write straight to the spot where the information will be kept forever. 

SMR (Shingled Magnetic Recording)

SMR or Shingled Magnetic Recording is a mechanism where the reading head of the hard drive is broader than the write head. Therefore, data should store on a hard drive in an overlapping pattern.

Due to space savings, the very same plate now can hold a much higher volume. The writing head of an SMR disc is broader but less watermarked than that of the reading head. As a result, the grooves can indeed be partially overlapping, allowing for the storage of extra information. The concern is that while their data remains intact, the tracks covering the data must be overwritten when the hard disc adds information.

SMR VS CMR: Advantages & Disadvantages

CMR Advantages

The best option for active storage is CMR hard drives when large volumes of data or high transfer rates need to be read and written. When a redundancy mechanism is present, this hard disc is the one the NAS devices choose to be using. Moreover, it performs effectively for a range of items, like –

  • Streaming with music
  • For utilization on NAS servers or broad sense servers, video, music, or image analysis.

CMR Disadvantages

Especially in comparison to an SMR hard disc, a CMR hard disk drive prices more.

SMR Advantages 

  • If primarily used for data preservation, SMR hard disks are a feasible choice. Suppose the data was once written and only seldom accessed. You may use this for extremely long-term photo and video archiving. SMR hard drives should not utilize in NAS systems, particularly when a failover system (RAID) is in operation.
  • There is an enhancement in storage efficiency of up to 30{50afa256e6562afb2cd7837d8db3fd71ce947f26b53ffff72a77bb9141ae121a}. In comparison to CMR drives, SMR drives have a greater amount of storage while consuming less power.

SMR Disadvantages

  • The hard drive for PC might be unable to transport data quickly enough, for example, terminate a RAID with just a warning as a result of this behavior, which can worsen with several minor movements and adjustments. A raid rebuild may cause this, necessitating the rewriting of a significant amount of information.
  • Previous data already stored on the drive frequently is required to be transferred in conjunction with new information since they are sometimes partially covered and unreadable as a result. In order to avoid overwriting other data, certain older data needs to rebuild. The material is broken down into sections or zones that are maintained collectively to prevent this from necessitating the rewriting of all data on hard drives with high-capacity usage.SMR VS CMR: Advantages & Disadvantages

How Do I Choose Between “CMR VS SMR”?

To choose the finest hard drive for you, you need to consider the backups and storage capacity. In general, an SMR hard drive would provide you with greater storage than a CMR HDD for a little less money per drive. Its use will be less adaptable, which is its fundamental disadvantage.

Like CMR drives, SMR drives provide rapid data access through random-read capabilities. The fact that they require constant loads and a bit of idleness makes them perfect for customized systems that utilize more of their structure and massive volume. In order to increase drive functionality at a sensible rate, you should purchase an SMR hard disc for backup and preservation. 

The reason is that less drive access means better performance. Because SMR drives provide a comparable volume on fewer drives, companies that want to purchase high-capacity drives prefer them.

Tips for Data Backup to CMR or SMR DrivesCMR or SMR Hard Drives

It would be a good idea to back up your data to the largest hard drive, whether you use CMR or SMR. Start a data backup on your PC by downloading and installing MiniTool ShadowMaker Trial Edition. Remember, the Computer system should attach to your hard disc. Hence, to apply this, follow the below steps properly –

  • First, one’s computer should always attach to the hard drive. Double-click the.exe file to begin installing MiniTool ShadowMaker Trial Edition by following the directions after obtaining it. 

Note: Upon your SMR vs CMR drives, do not install MiniTool ShadowMaker.

  • Secondly, go to the Backup page by navigating. You could discover that this backup program automatically backs up the system. By selecting Folders and Files under Source, you can backup data. Simply select OK following checking off at every item you wish to restore.Data Backup to CMR or SMR Drives
  • Now, in order to store your duplicate copies, click the Destination option, next specify a destination and select OK. You have just a selection between the Administrator, Library, Computer, and Shared destination pathways. The endpoint might well be either your CMR or SMR hard drive there. Moreover, you have to develop a planned strategy for the backup. You may back up your computer utilizing MiniTool ShadowMaker nearly every day, weekly basis, each month, and whenever an event takes place. Before choosing the Back up Now alternative, select the Schedule button. Afterward when, select the program because then MiniTool ShadowMaker will commence storing up your data continuously at a point in time.
  • Lastly, to start producing a backup on your system, choose the Backup Now button.


Well, the rationale and regions of implementation for every technology like SMR and CMR are distinct. Beyond all else, SMR is a plausible choice when you require massive hard discs employed only for data storage and have cheaper material and current consumption expenditures. 

CMR hard disks are indeed a better alternative for undertaking everlasting writing tasks and transmitting large quantities of information with significant transfer rates, or when the reliability of big information transfers is important.

We hope this article will definitely help you differentiate between “CMR Vs SMR”. Moreover, if you are still facing issues, kindly let us know in the comments section below. 

Frequently Asked Questions

Q1: SMR vs CMR; Which is better?

Ans: This technology’s value is an up to 30{50afa256e6562afb2cd7837d8db3fd71ce947f26b53ffff72a77bb9141ae121a} improvement in supercapacitors. In comparison to CMR, SMR drives have a greater amount of storage while consuming less energy. Therefore, being used predominantly for the protection of data, SMR hard disks are a feasible option.

Q2: Who produces SMR drives?

Ans: Seagate produces SMR drives. In 2013, they started distributing sensor SMR hard drives, hence boasting a 25{50afa256e6562afb2cd7837d8db3fd71ce947f26b53ffff72a77bb9141ae121a} enhancement in nameplate storage versus non-shingled memory.