Flash drive outdone by its predecesor

With data volumes continuing to increase at an unprecedented rate, capacity has become a critical criterion when it comes to selecting data storage solutions. On the flip side, the need for increased speed and performance and ‘instant switch-on’ solutions has driven a growing trend towards flash-based storage systems.

With industry touting Solid State Drives (SSDs) and flash-based storage as the way of the future and predicting the death of the hard drive as we know it, where exactly does the path lie? Is the future in flash, or is the humble hard drive here to stay?

Hard Disk Drives (HDDs) utilise spinning media technology, which, although is prone to issues as a result of being dropped or moved around too much, has been tried and tested over many decades and has seen significant enhancements to improve speed and storage capacity. 

On the other hand, SSDs as well as thumb drives and memory cards utilise flash, a newer technology which is faster and is not prone to the ill effects of being dropped or handled roughly, as it does not require moving parts in the form of spinning platters.

While flash-based storage is faster and is better able to handle mobility, several challenges remain with this new technology, which means that the predicted death of the HDD is vastly premature.

Challenges
One of the biggest challenges currently is that HDDs are far more cost effective than SSDs. This is because, as an older technology, the cost of research and development (R&D) as well as manufacturing around HDDs has already been absorbed. 

SSDs are still in the infancy stage, which means that R&D costs are high and the economies of scale with regard to major manufacturing runs cannot be achieved yet. In addition, the available capacity of SSDs simply cannot cope with the storage volumes required today. 

While HDDs are available in capacities of up to 6TB, the maximum capacity of a SSD is only 1TB. The cost per gigabyte of SSD remains unaffordable for the majority of applications and for many users.

Another issue with SSDs is that of reliability. While SSDs do not contain moving parts such as read/write arms and spinning platters, there is a common issue of the degeneration of cells, which can negatively affect the capacity of the drive over the years. 

Cell generation is unpredictable, and causes permanent data loss, which is problematic. SSD failure is permanent, whereas often data can be recovered from a damaged HDD, depending on the severity of the damage.

Pros 
While SSD is less prone to damage from dropping or shocks, the spinning platter continues to have the advantage, not only in terms of cost per gigabyte but also in terms of applications. The HDD is available in many platforms, such as the 3.5-inch architecture for desktop applications, 2.5-inch form factor for mobile applications, and 1.8-inch for automobiles and specialised applications.

The many applications for HDDs are evident in the fact that around 90% of the data stored around the world is stored on a hard drive, and approximately 90% of data storage manufactured today is still HDD. 

SSD is currently a technology that fits niche applications, such as smartphones, tablets, cameras and other applications that are not performance or storage intensive. In addition, SSDs are also used in high-end servers, which run mission critical applications where speed is critical. However, when it comes to capacity data storage, the trusted, cost effective HDD is here to stay.

Within the flash-memory space, there are also a host of new technologies being developed, such as Phase-Change Memory (PCM), Resistive Random-Access Memory (RRAM), and Magnetoresistive RAM (MRAM), which may show promise with faster speed and durability. 

However, while HDD is a tried and tested technology, it has by no means become static, and a similar evolution is taking place from a hard drive perspective. 

Perpendicular recording and Single Magnetic Recording (SMR) have enabled increased performance and capacity, and the next upcoming technology centres around heat assisted magnetic recording, which could further this technology, leading to hard drives with even higher capacities and greater performance.

When it comes to choosing between HDD and SSD, users need to take into account specific requirements, preferences and budget. Each storage medium have its own pros and cons, and each is thus currently applicable in different devices and scenarios. This means that the two technologies will continue to co-exist for the foreseeable future, and we can safely say that the HDD is here to stay.

Follow Gadget on Twitter on @GadgetZA

Advertisting

Unfinished business: We need self-examination to heal from apartheid

Physical and psychological violence will continue unless we self-reflect on our apartheid scars

Coronavirus: South Africa will evacuate citizens from Wuhan

The government is expected to evacuate citizens from Wuhan, where the coronavirus outbreak originated

Primedia CEO Essack leaves following internal battles

Omar Essack leaves the 702 and 94.7 owners after a protracted standoff with the board

‘We’re satisfied with SA’s land reform policy’— US Ambassador

Top US official is lobbying multinational firms to invest in South Africa

Press Releases

Over R400-m given to businesses since launch of three-minute overdraft

The 3-minute overdraft radically reduces the time it takes for businesses to have their working capital needs met

Tourism can push Africa onto a new path – minister

The continent is fast becoming a dynamic sought-after tourist destination

South Africa’s education system is broken and unequal, and must be fixed without further delay

The Amnesty International report found that the South African government continues to miss its own education upgrading targets

Business travel industry generates billions

Meetings Africa is ready to take advantage of this lucrative opportunity

Conferences connect people to ideas

The World Expo and Meetings Africa are all about stimulating innovation – and income

SAB Zenzele Kabili B-BBEE share scheme

New scheme to be launched following the biggest B-BBEE FMCG payout in South Africa’s history

Digging deep

Automation is unstoppable, but if we're strategic about its implementation, it presents major opportunities

TFSAs are the gymnasts of the retirement savings world

The idea is to get South Africans to save, but it's best to do your research first to find out if a TFSA is really suited to your needs