07 Sep

Glass Substrates For 20TB Hard Drives-Latest Technology

Data security and storage has been a topic of discussion since long and there is a constant search for latest technology that eases the process for us. While hard drives have been around for a while companies are now daring to innovate in technologies to make their products more efficient. For now, we can look forward to hard drives enabling the user to store 20 TB of data on a single hard drive which is a boon to many. This means the end of the constant struggle with HDD handling in big numbers. Here is how big companies are looking at delivering on their word.

A new inclusion of glass substrates has been suggested instead of aluminum. Today only laptop drives use glass substrates and haven’t yet been used for external HDDs. However, glass substrates have various advantages over aluminum.

  • To start with glass is more rigid than aluminum which means the platters can be made thinner and lighter.
  • They are smoother and flatter than aluminum allowing them to be packed tightly.
  • They expand less under heat which means they can withstand more thermal pressure.
  • The amount of energy used to spin the glass platter would be very less due to its lighter weight than an aluminum platter.Companies like Hoya have already begun prototyping by achieving platter thickness of 0.5mm and 0.381mm which is less compared to the current ones used which are 0.635mm. While platters require space between each other and a gap between the next platter, this innovation reduces the space taken up by the previous platter by around 40%. This means more space for platters, therefore, increasing platters in the same storage capacity. HAMR (Heat Assisted Magnetic Recording) is to be used in glass substrates to enable better writing on the hard drive with a laser. Seagate, one of the top companies is already planning to launch HAMR HDDs in 2018 and come up with 20TB hard drives by 2020.

    Even though with the increased demand in cloud storage, security remains a major concern which is well taken care of in external drives. Now the demand has decreased and the storage capacities of HDDs will increase the appeal of these drives. Businesses will therefore not shy away from investing in glass substrates even if they are higher in price. No matter how much SSDs are used, they cannot reach the level of 100 or 500TB capacities something HDDs can. Also, the need for storing data doesn’t seem to be going down anytime soon as data increases every second. Which is why Hard drives have a long way to go with frequent changes to keep up with the need of the time.

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