SSD Vs HDD：如果你看一下存储的历史，用户没有太多的选择可供选择。旧电脑(Old PCs)通常有一个硬盘驱动器 ( HDD )。什么是硬盘(HDD)？这是一项众所周知的技术，传统上用于存储。这是操作系统所在的位置。您设备上安装的所有文件夹、文件和其他应用程序也都存在于HDD中。
SSD 与 HDD：哪个更好，为什么？(SSD Vs HDD: Which one is Better and Why?)
什么是硬盘？(What is HDD?)
硬盘驱动器 (HDD)(hard disk drive (HDD))如何工作？HDD的主要组件是圆形磁盘。这叫做盘子。该盘片存储您的所有数据。盘片上有一个读写臂，用于从磁盘读取数据或将数据写入磁盘。您设备上的操作系统和其他应用程序的运行速度取决于您的HDD的速度。盘片旋转得越快，速度就越高。
这些盘片的数量可以是一个或多个。这些磁盘的两面都涂有磁性材料。读写头移动得非常快。由于HDD具有移动部件，因此它是系统中最慢和最脆弱的组件。
读/写操作是如何发生的？一个盘子被分成几个部分。这些同心圆称为轨道。每个磁道被划分为称为扇区的逻辑单元。存储区域由其扇区和磁道号寻址。由扇区号和磁道号组合产生的唯一地址用于存储和定位数据。
当您要更新/检索数据时，执行器臂在(actuator arm)I/O controller的帮助下定位数据的地址。读写头检查每个地址是否有电荷。它根据电荷是否存在来收集数据。为了执行更新操作，读/写磁头改变指定磁道和扇区号上的电荷。
注意：术语延迟描述了执行器臂在盘片旋转时找到正确位置所花费的时间。
使用 HDD 有什么好处？(What are the benefits of using an HDD?)
HDD最明显的好处是它是一种久经考验的技术。IT 已经存在好几年了。下一个好处是大容量存储(mass storage)。HDD(HDDs)有大尺寸可供选择。在某些可以拥有多个驱动器的 PC 中，您可以保留多个HDD(HDDs)以进行大存储。此外，对于相同数量的存储，您为HDD支付的费用将低于SSD。因此(Thus)，HDD(HDDs)更便宜。
硬盘驱动器的限制是什么？(What are the limitations of an HDD?)
HDD由在执行读/写操作时移动的机械部件组成。如果处理不当，硬盘(HDD)部件可能无法工作。这些部件很脆弱，需要小心处理。由于需要物理搜索地址，因此在HDD(HDDs)的情况下延迟很高。另一个限制是重量——HDD(– HDDs)比SSD(SSDs)重。不仅如此，与SSD(SSDs)相比，它们还消耗更多能量。
谁应该使用硬盘？(Who should use HDDs?)
我们已经看到了使用HDD(HDD)的利弊。它是给谁的？让我们看看。
- 如果你有预算，你应该去买硬盘(HDDs)。您以实惠的价格获得大量存储空间。
- 如果您是多媒体的重度用户，或者您需要存储大量视频，那么您将需要大量空间。您在哪里以可承受的价格获得大容量存储空间？–硬盘驱动器(HDDs)
- 从事图形设计的人也更喜欢HDD(HDDs)而不是SSD(SSDs)。照片和视频编辑器的使用会耗尽存储空间。与SSD相比， (SSDs)HDD(HDDs)的更换成本更低。
- 如果您想在本地下载和访问媒体文件，那么HDD(HDDs)应该是您的存储选择。
什么是固态硬盘？(What is SSD?)
固态硬盘(State Drive)或SSD是一种相对较新的存储技术。许多现代笔记本电脑都有SSD(SSDs)。它没有任何可移动的机械部件。那么，它是如何工作的呢？它使用NAND 闪存(NAND flash memory)。它拥有的存储取决于它包含的NAND芯片的数量。因此，目标是扩大SSD可以容纳的芯片数量，以便可以实现与 HDD 相似的尺寸。
SSD使用的基础技术与USB驱动器相同。这里，浮栅晶体管检查(transistors check)特定地址是否有电荷来存储数据。这些门被组织成网格和块。构成夹点的每一行块称为一页。有一个控制器可以跟踪执行的所有操作。
SSD有什么好处？(What are the benefits of SSD?)
对于游戏玩家是经常流式传输电影的用户，SSD因其卓越的速度是更好的选择。它们的重量比HDD轻。此外，SSD不像HDD那样脆弱。因此，耐用性是另一个好处。您的系统会更凉爽，因为SSD比(SSDs)HDD(HDDs)消耗更少的能量。
SSD的局限性是什么？(What are the limitations of SSD? )
SSD的主要缺点是它的价格。它们比HDD(HDDs)贵。由于它们相对较新，价格可能会随着时间的推移而下降。SSD(SSDs)适合需要大容量存储的用户。
另请阅读：(Also Read:) 在 Windows 10 中检查您的驱动器是 SSD 还是 HDD(Check If Your Drive is SSD or HDD in Windows 10)
谁应该使用 SSD？(Who should use SSDs?)
什么时候固态硬盘比HDD更受欢迎？在下面提到的情况下。
- 经常出差的人：商人、公用事业工人、研究人员等……这些人可能无法以脆弱的方式处理他们的笔记本电脑。如果他们使用带有HDD(HDDs)的笔记本电脑，则磨损的可能性可能会更高。因此，最好选择SSD(SSDs)。
- 对于快速启动和应用程序启动，SSD是首选。如果速度是您的首要任务，请选择带有SSD存储的系统。
- 音响工程师、音乐家可能想要使用SSD(SSDs)，因为HDD的噪音在处理音频时可能会令人不安。
注意 –(Note – )喜欢高速度但也依赖硬盘驱动器的工程专业人士和其他用户。这样的人可以选择具有双驱动器的系统。
SSD 与 HDD：有什么区别？ (SSD Vs HDD: What’s the difference? )
在本节中，我们比较硬盘驱动器和固态驱动器的大小、速度、性能等参数。
1. 容量(1. Capacity)
公司一直在努力缩小HDD(HDD)和SSD的容量差距。可以同时获得类似大小的HDD和SSD。但是，SSD的成本将高于相同尺寸的HDD。
可用存储的一般范围为 128 GB – 2 GB。但是，如果您正在寻找具有海量存储的系统，那么HDD(HDDs)是您的最佳选择。您甚至可以获得4TB的HDD。商用硬盘范围从 40GB 到 12TB。更高容量的HDD(HDDs)可供企业使用。对于一般的最终用户，2 TB HDD就足够了。8TB-12TB 大小的HDD(HDDs)用于保存备份数据的服务器和其他设备。它也以可承受的价格提供。在SSD最初的日子里，大尺寸是不可用的。但是今天，您可以获得TB 级(Terabytes)的SSD(SSDs)的存储。但它们带有沉重的价格标签。
专家建议使用多个小容量硬盘(HDDs)而不是单个大硬盘(HDD)。这是因为，如果驱动器发生故障，如果数据位于单个驱动器上，所有数据都会丢失。如果数据存储在多个驱动器中，当一个驱动器发生故障时，其他驱动器上的数据不受影响。
尽管SSD(SSDs)正在赶上HDD的容量，但可负担性仍然是一个问题。因此，对于那些专注于良好容量的人来说，HDD(HDDs)是存储的主要选择。
2. 价格(2. Price)
普通最终用户通常有预算。他们希望以实惠的价格获得产品和服务。在价格方面，HDD(HDDs)胜过SSD。HDD(HDDs)较便宜，因为它是一项成熟的技术。1TB HDD(HDD)的平均成本为 50 美元。但相同容量的SSD将花费近 125 美元。价格差距正在稳步缩小。SSD(SSDs)可能会变得同样便宜。但是，目前和不久的将来，HDD(HDDs)是预算友好的选择。
3.速度(3. Speed)
速度是SSD(SSDs)的强项之一。SSD PC的启动过程只需几秒钟。无论是启动还是后续功能，HDD总是比SSD慢。在配备SSD(SSD)的 PC 上，文件传输、启动和运行应用程序等所有操作都将更快。
速度的明显差异主要是因为它们的构建方式。HDD有许多可移动的部件。它的速度取决于盘片的旋转速度。SSD不依赖于机械运动部件。因此，它要快得多。速度(Speed)和性能是固态硬盘的最大优势。如果这些参数是您的优先考虑，那么您应该愿意支付更高的成本并购买SSD。
4. 耐用性(4. Durability)
使用SSD，您不会在跌落时面临严重损坏的风险。这是因为它们没有任何活动部件。如果你是一个没有时间轻柔处理你的系统的用户，最好还是买一个带SSD的系统。您的数据在您的系统中是安全的，即使您在处理它时很粗暴。
5. 噪音(5. Noise)
各种硬盘驱动器都会发出一些噪音。但是，SSD(SSDs)是非机械设备。因此，它们在操作时是安静的。这就是为什么音频工程师和音乐家喜欢使用具有固态驱动器的系统的原因。如果您不在乎轻微的噪音，您可以选择硬盘驱动(HDD)器。如果这是一个令人不安的因素，请选择安静的SSD(SSDs)。
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你不能指出一种存储方式并说它是最好的。最适合您的存储类型取决于您的优先级。SSD(SSDs)具有无与伦比的速度、耐用性和无噪音的优点。HDD(HDDs)非常适合希望以可承受的价格获得高容量的用户。但是，它们很脆弱，可能会发出噪音。因此，如果您喜欢在本地访问所有媒体文件，您将需要一个HDD。如果您希望获得良好的速度并将文件和文件夹保存在云存储中，那么SSD(SSDs)是更好的选择。
SSD Vs HDD: Which one is Better and Why
SSD Vs HDD: If you look at the history of storage, the user has not had many options to choose from. Old PCs usually have a hard disk drive (HDD). What is an HDD? It is a well-known technology that has traditionally been used for storage. This is where the operating system resides. All your folders, files and other applications installed on your device are also present in the HDD.
SSD Vs HDD: Which one is Better and Why?
What is HDD?
How does a hard disk drive (HDD) work? An HDD’s main component is a circular disk. This is called the platter. The platter stores all your data. There is a read-write arm over the platter that reads from or writes data to the disk. The speed with which the OS and other applications on your device work depend on the speed of your HDD. The faster the platter rotates, the higher is the speed.
These platters can be one or more in number. These disks are coated with magnetic material on both sides. The read-write head moves very fast. Since the HDD has moving parts, it is the slowest and most fragile component of a system.
How do read/write operations take place? A platter is divided into sections. These concentric circles are called tracks. Each track is divided into logical units called sectors. An area of storage is addressed by its sector and track number. The unique addresses produced from the combination of sector and track numbers are used to store and locate data.
When you want to update/retrieve data, the actuator arm locates the address of the data with the help of the I/O controller. The read/write head checks whether there is charge in each address or not. It gathers data based on whether the charge is present or not. To perform an update operation, the read/write head changes the charge on the specified track and sector number.
Note: the term latency describes the time taken for the actuator arm to find the right location while the platter is spinning.
What are the benefits of using an HDD?
The most obvious benefit of HDD is it is a tried and tested technology. IT has been there for several years. The next benefit is mass storage. HDDs are available in large sizes. In some PCs where you can have more than a single drive, you can keep multiple HDDs for large storage. Also, for the same amount of storage, you will be paying less for an HDD than an SSD. Thus, the HDDs are less expensive.
What are the limitations of an HDD?
The HDD is made up of mechanical parts that move while performing read/write operations. If not handled properly, HDD parts can fail to work. These parts are fragile and need to be handled carefully. Since an address needs to be physically searched, the latency is high in the case of HDDs. Yet another limitation would be the weight – HDDs weigh more than SSDs. Not only that, but they also consume more energy when compared to SSDs.
Who should use HDDs?
We have seen the pros and cons of using an HDD. Who is it for? Let us see.
- If you are on a budget, you should go for HDDs. You get large amounts of storage at pocket-friendly prices.
- If you are a heavy user of multimedia or you need to store a high number of videos, then you will need lots of space. And where do you get large storage at an affordable rate? – HDDs
- People who are into graphic designing also prefer HDDs over SSDs. Usage of photo and video editor wears out the storage. HDDs can be replaced at a cheaper cost compared to SSDs.
- If you want to download and access media files locally, then HDDs should be your choice of storage.
What is SSD?
Solid State Drive or SSD is a relatively new storage technology. Many modern laptops have SSDs. It does not have any mechanical parts that move. Then, how does it work? It uses a NAND flash memory. The storage it has depends on the number of NAND chips it contains. Thus, the aim is to expand the number of chips an SSD can hold so that sizes similar to HDD can be achieved.
The base technology used in SSD is the same as that of USB drives. Here, the floating gate transistors check whether there is a charge in the specific address to store data. These gates are organized as grids and blocks. Each row of blocks that make up a grip is called a page. There is a controller that keeps track of all the operations performed.
What are the benefits of SSD?
For gamers are users who frequently stream movies, SSD is a better choice due to their superior speed. They weigh lesser than HDD. Also, SSD is not as fragile as HDD. So, durability is another benefit. Your system will be cooler as SSDs consume lesser energy than HDDs.
What are the limitations of SSD?
The main drawback of an SSD is its price. They are more expensive than HDDs. Since they are relatively new, the prices may come down with time. SSDs are suitable for users who want storage with massive capacity.
Also Read: Check If Your Drive is SSD or HDD in Windows 10
Who should use SSDs?
When is a solid-state drive preferred over HDD? In the situations mentioned below.
- People who are frequently on-the-go: businessmen, utility workers, researchers, etc… These people may not be able to handle their laptops in a fragile way. If they use laptops with HDDs, there may be a higher chance of wear and tear. So, it is better to go for SSDs.
- For quick bootups and app launches, SSD is preferred. If speed is your priority, choose a system with SSD storage.
- Sound engineers, musicians may want to use SSDs because the noise from the HDD may be disturbing while working with audio.
Note – Engineering professions and other users who prefer good speed but also depend on hard drives. Such people can go for systems with dual drives.
SSD Vs HDD: What’s the difference?
In this section, we compare hard disk drive and solid-state drive on parameters such as size, speed, performance….
1. Capacity
Companies have been trying to reduce the gap between the capacity of HDD and SSD. It is possible to get both HDD and SSD of similar sizes. However, an SSD will cost more than an HDD of the same size.
The general range of available storage is 128 GB – 2 GB. However, if you are looking for systems with massive storage, HDDs are the way to go. You can even get an HDD of 4TB. The commercial hard drives range from 40GB to 12TB. HDDs of even higher capacities are available for enterprise use. For a general end-user, a 2 TB HDD will suffice. HDDs of size 8TB-12TB are used for servers and other devices that hold backed up data. It is available at an affordable rate as well. In the initial days of SSD, large sizes were not available. But today, you can obtain SSDs with Terabytes of storage. But they come with a heavy price tag.
Experts recommend having multiple HDDs with small capacities rather than a single large HDD. This is because, in case of a drive failure, all your data is lost if it is on a single drive. If data is stored in several drives, when one drive fails, data on others remain unaffected.
Although SSDs are catching up with the HDD capacity, affordability is still a problem. Thus, for those focussing on a good capacity, HDDs are the primary choice of storage.
2. Price
The common end-user is usually on a budget. They want to get products and services at pocket-friendly rates. When it comes to price, HDDs beat SSD’s hands down. HDDs are less expensive because it is an established technology. The average cost of a 1TB HDD is $50. But an SSD of the same capacity would cost almost $125. The price gap is closing steadily. There may come a time when SSDs are just as inexpensive. However, currently and in the near future, HDDs are the budget-friendly option.
3. Speed
Speed is one of the strongest points of SSDs. The booting process of an SSD PC will take just a few seconds. Be it booting up or subsequent functions, the HDD is always slower than an SSD. All operations such as file transferring, launching, and running of applications will be faster on a PC with SSD.
The stark difference in speeds is mainly because of the way they are built. An HDD has many parts that move. Its speed is dependent on the rotation speed of the platter. An SSD does not dependent on mechanical moving parts. Therefore, it is much faster. Speed and performance are the greatest strengths of a solid-state drive. If these parameters are your priority, then you should be willing to pay a higher cost and buy an SSD.
4. Durability
With an SSD, you do not risk serious damage in case of drops. This is because they do not have any moving parts. If you are a user who doesn’t have the time to handle your system softly, it is better to buy a system with an SSD. Your data is safe in your system even if you are rough in handling it.
5. Noise
All kinds of hard disk drives emit some amount of noise. However, SSDs are non-mechanical devices. Thus they are quiet when they operate. This is the reason why audio engineers and musicians love to work with systems that have the solid-state drive. If you do not care about the mild noise, you may opt for an HDD. If this is a disturbing factor, go for the quiet SSDs.
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You cannot pin-point at one kind of storage and say it is the best. The kind of storage that is best for you depends on your priorities. SSDs have the advantages of unmatched speed, durability, and is noiseless. HDDs are good for users who want high capacity at an affordable price. However, they are fragile and may emit noise. So, if you are someone who prefers to locally access all media files, you will need an HDD. If you are looking at a good speed and keep your files and folders in cloud storage, then SSDs are a better choice.
