There are many SSDs on the market, so which one will be best for your server applications? In today's article, we will consider this question so that choosing the right memory does not overwhelm and becomes clear. We will help you choose the most efficient server drive for your applications.
In today's fast-changing world of modern technology, adequate server performance plays a very important role. Choosing the right SSDs for your server is the key to the performance and reliability of your unit. When choosing, it is worth paying attention to such parameters as the capacity of the drive, which should be adapted to the needs of your server. Read and write speeds are also important. Durability and endurance of the drive are also important, so that your server can work continuously for a long time.
HDDs vs SSDs
Hard disk drives, or HDDs, differ from SSDs in that they write using spinning, magnetic platters, or discs, that allow data to be written. SSDs, on the other hand, have no moving parts, and all writing is done with the help of semiconductors through an electronic writing method.
HDD or SSD?
Let's look at some key parameters to compare the two solutions:
SSDs offer much faster read and write times, resulting in lightning-fast application startup and server responsiveness. They allow for reduced load times, faster data transfers and overall responsiveness.
HDDs provide more capacity at an affordable price. SSDs of the same capacity, on the other hand, are more expensive.
SSDs typically consume less power than HDDs, which translates into reduced cost of ownership and a greener IT infrastructure.
SSDs, unlike classic HDD solutions, offer quiet operation, which translates into a quieter server environment.
To sum up, more often than not, SSDs are proving to be a better option for use in servers today, mainly due to their greater durability, despite their higher cost, hence we devote the remainder of this article to them.
What to look for when choosing an SSD?
A few key parameters will allow you to choose the right SSD for your needs:
IOPS - Input/Output operations per second (Number of input/output operations per second)
This indicator determines the number of operations per second that the drive is able to perform. The highest score of the drives will be the best one. By paying attention to this parameter, you will be sure to ensure optimal data transfer speed and reduce loading times for applications and websites.
Memory capacity
This is a key parameter that will allow you to determine the usable capacity of the drive. SSDs with higher capacity may be more expensive, but they offer better cost-effectiveness in the long run. Thus, it is worth considering more expensive options in this regard.
Disk durability and life span
For server applications, it is very important to pay attention to disk life. Many solutions available on the market, unfortunately, lose performance very quickly in real deployments. By using the right disk, you will be able to ensure that your server runs smoothly for a long time even under very heavy loads.
Data protection functions
One of the most important things that all disk drive users have in common is the need for adequate protection of the data on the media. You should first consider drives that have built-in features to protect against data loss in the event of a temporary loss of power, for example. This will ensure security against the loss of critical data on the drives.
Interface type
When choosing memory, you should pay attention to whether the type of interface corresponds to the one you have in your server. The most common types of interfaces are SATA, SAS and PCIe, each offering different performance and capabilities. SAS interfaces are a new version of SATA, allowing faster data transfer speeds and additionally have backward compatibility with SATA.
PCIe, on the other hand, is an evolution of PCI - Compared to SATA-based drives, PCIe SSDs can offer up to 4 times the bandwidth and much faster loading times for server applications.
NAND flash memory type
SSDs use several types of memory, which differ in the way they store data. The three main types of NAND flash memory are: SLC, MLC and TLC. They differ in the number of bits stored per cell.
SLC (Single Level Cell)
This type of memory has the highest performance and durability, since each bit is stored on a separate cell. The main disadvantage, however, is the price, which is the highest of all memory types.
MLC (Multi Level Cell)
As the name suggests, this type of memory stores many bits per cell. This results in greater capacity, but also reduces performance and endurance. However, it often proves to be an ideal price/performance trade-off for the drive.
TLC (Triple Level Cell)
This type of memory stores even more bits per cell. This reduces cost and increases capacity. However, these drives have the worst performance and endurance. Usually this type of memory is used in consumer drives.
3D NAND
3D NAND chips use MLC and TLC, the difference between this and traditional solutions lies in the arrangement of memory cells. This is because the cells in these chips have been arranged vertically, instead of horizontally. This design allows the drive to have more capacity using the same space. Chips of this type also tend to have longer uptime than traditional models.
Various applications of SSDs
The number of channels determines how many NAND modules can be connected in parallel to the microcontroller.
The higher the NAND channels, the:
● higher parallelism,
● higher performance,
● lower latency,
● higher number of NAND packets,
● higher power consumption (W),
● higher BOM costs (more DRAM, higher PLP capacity).
Below we have provided three examples of typical disk drive applications. The example disks are provided from the offer of Swissbit - the only European manufacturer of these solutions.
Swissbit N3000
- Performance is not critical
- SARA PCLe Transition
- Temperature (cross temperature) is critical
- Lower densities
Startup disk, data logging
Built-in, industrial system: IPC, edge, servers, routers, switches.
Swissbit N5200
- Wydajność jest krytyczna
Opóźnienie zapisu <1 wymagane - Required enterprise-class features (reliability, security, virtualization)
Enterprise servers, edge data centers, data centers, netcom routers (high-end)
Swissbit D1200/D2200
- Top performance required
- Power consumption is not a problem
- Stable, cooled and controlled environmental conditions
- Required data center functions
Data center storage: HPC, cloud computing, AI/ML, video production
Best SSDs to optimize your server's performance
Thanks to our experience in supplying customers with proven solutions, we are able to guarantee for the drives shown below very good value for money performance and excellent uptime without performance degradation even under heavy loads for long periods of time.
Problems of popular solutions on the market
SSDs are designed to emulate HDDs for easy integration into the computing infrastructure already in place. Today's applications are increasingly increasing the load on SSDs, compounding the adverse side effects of emulating HDDs. These side effects are becoming significant or even unacceptable for digital transformation, requiring a new approach.
A sustainable and more attractive solution requires a new approach to controller firmware, device, qualification methodologies, tools and performance metrics.
Operational factors
Almost all SSDs use internal NAND flash memory for persistent storage. However, SSD solid-state memory works quite differently from the moving magnetic heads of the HDDs it emulates. The operations that internal and external controllers perform to make solid-state memory emulate magnetic memory are complex, making it difficult (if not impossible) to hide all the differences between the technologies.
Side effects can be difficult to detect when the system, databases and applications do not strain the available performance and capacity of SSDs. However, several issues arise when SSDs approach their design limits. These operational issues typically occur with actual production workloads and may remain undetectable during benchmark testing.
Some of the most serious SSD operational problems include:
- Inconsistent performance and latency, especially as drives approach full capacity
- Intermittent spikes in latency, sometimes exceeding several seconds
- Significant drops in performance after a few weeks or months of use
- Premature warranty wear based on strength specifications
- Shortened life expectancy related to workload
- Early equipment failures in production environments
Main reasons for problems
SSDs use complex controller algorithms to move data to other areas of NAND flash memory, making space available for future data. These additional data movement operations are intertwined with read and write commands from the host, generating additional background traffic and creating latency. Over time, these internal data movements create bottlenecks that degrade performance, latency and endurance.
There are three overarching themes explaining why SSD Problems exist:
- Users accept the performance of SSDs because it is much better than the HDDs they replaced.
2. Systems have many performance bottlenecks, so SSDs are not always critical components. - Standard benchmark tests do not reveal the limitations of SSD production performance.
Swissbit D2200
Swissbit is the only supplier on the market that manufactures its solutions in Europe. Thanks to an innovative approach to the development of drives and their exceptional optimization, they are able to achieve up to 5 times better performance in the long term than competitive solutions, which often lose performance after a short period of use. Swissbit solutions are designed to last as long as possible with the same level of performance.
The graphic below shows tests of Swissbit solutions compared to competing solutions.
The D2200 family of PCIe SSDs Gen5 is designed for enterprise servers and edge data centers, offering exceptional performance with minimal latency. The D2200 drive also excels in energy efficiency, delivering sequential read performance of up to 970 MB/s per watt. This performance also has an impact on thermal management, with the D2200's optimized hardware design and firmware enhancements reducing server heat generation by up to 20°C.