这篇文章讨论了固态混合硬盘(Solid State Hybrid Hard Drives)( SSHD )，它们是如何工作的，有什么好处，它们的功能，看看你是否想要一个。现在我们知道，系统中的缓存通常放置在RAM和CPU之间，以保存最近获取的数据以供进一步使用。这节省了一些时间并且计算速度更快。混合驱动器也使用缓存，但它位于Hard Disk Drives和RAM之间（除了RAM和CPU之间的缓存）。
什么是混合硬盘 (SSHD)
直到 2012 年末，制造商都在制造HDD(HDDs)（硬盘驱动器(Hard Disk Drives)）或SSD(SSDs)（固态驱动器(Solid State Drives)）或两者兼而有之，并将它们分开用于计算机。硬盘驱动器(Hard Disk Drives)是普通的，但存储空间很大，与固态驱动器(Solid State Drives)相比仍然非常便宜。SSD(SSDs)有时也称为固态磁盘(Solid State Disks)（但内部没有磁盘）。SSD的内部是一个复杂的集成电路，即使在没有电源的情况下也能存储数据。没有像硬盘(Hard Disks)那样涉及机械动作，因此节省了检索和写入数据的时间。
混合驱动器(Hybrid Drive)( SSHD )(SSHD)是硬盘驱动器(Hard Disk Drive)( HDD ) 和固态驱动器(Solid State Drive)( SSD ) 的组合，后者更多地充当缓存，而不仅仅是存储设备。它的固件会更频繁地检查“获取”哪些数据集，并将这些数据集存储在混合驱动器的(Hybrid Drive)SSD部分，以便下次CPU需要它时，可以更快地提供驻留在SSD部分的数据。(SSD)因此，混合驱动器(Hybrid Drive)本质上是具有固态驱动器(Solid State Drive)类型缓存的硬盘，用于节省“获取”操作的时间。
注意：(NOTE:) “获取”操作包括检查磁盘、磁道和扇区是否有所需数据，将HDD的磁头旋转到该点并收集所需数据。它包括“读取”操作，其中所需的数据通过HDD磁盘磁头下方，以便可以与“获取”一起使用。换句话说，“获取”只是获取CPU所需的数据。
快速了解 HDD 与 SSD
(Solid State Drives)正如我们之前所见，固态驱动器也称为固态磁盘(Solid State Disks)，但不涉及磁盘。HDD和SSD的构造方法不同。HDD本质上是机械的它涉及许多磁盘，其中数据以划痕的形式存储以标记二进制数字（0 和 1）。每个磁盘都有一个或两个“磁头”来读取/写入数据。每个磁盘的磁头数取决于磁盘是否在两面都可用。如果是，则有两个磁头，否则每个磁盘只有一个磁头。
使用SSD(SSDs)，无需磁头，也无需旋转磁盘。简而言之，没有机械动作，因此与普通硬盘(Hard Disks)相比，读/写速度要快得多。SSD(SSDs)有一个复杂的电路，用于存储表示存储在其中的数据的二进制数字。该电路几乎可以立即“获取”数据，这与HDD不同，后者在访问数据之前必须旋转磁盘。
显然，与HDD(HDDs)相比， SSD(SSDs)的成本更高。如果您需要更快的操作，例如玩游戏，SSD(SSDs)对您有好处，如果您需要更多存储空间并且平均速度还可以，例如在使用视频编辑软件时，硬盘驱动器(Hard Drives)更好。
在混合驱动器上读取数据(Data)- 节省时间(Hybrid Drive – Saving Time)
到现在为止，您知道如何在HDD和SSD上读取数据。这种混合适用于读取混合磁盘(Hybrid Disks)上的数据，这些磁盘只是带有一点SSD的普通(SSD)硬盘(Hard Disks)。将固件添加到设计中。该固件密切关注计算机上更频繁地“获取”哪些数据。频繁的数据存储在SSD上，这样下次CPU需要时，硬盘的磁盘就不需要旋转了。相反，数据是从Hybrid Drive的(Hybrid Drive)SSD部分提供的。
这更像是直接从RAM中读取数据——无需跟踪磁盘、磁道、扇区和旋转磁盘来“读取”数据。从本质上讲，除了经常使用的程序之外，部分操作系统更有可能存储在SSD上。(SSDs)
第一次读取混合(Hybrid)驱动器上的数据时，速度不会更快。但是，当您继续使用混合(Hybrid)驱动器时，固件会了解经常使用的数据并使其足够快以满足需求。
总而言之，混合(Hybrid) 驱动器是(Drives)SSD(SSDs)的新型但受欢迎的替代品，因为后者目前的价格昂贵。需要大存储空间和一些额外速度的人可能会选择这种类型的存储设备。
这解释了什么是混合驱动(Drive)，我希望它解释得足够详细。如果您有任何想法，请发表评论。
明天我们将详细了解混合驱动器、SSD 和 HDD(Hybrid Drive vs SSD vs HDD)。(Tomorrow we will take a detailed look at Hybrid Drive vs SSD vs HDD.)
What is a Hybrid Drive? Is SSHD better than HDD or SSD?
This post talks about Solid State Hybrid Hard Drives (SSHD), how they work and what are the benefits, their features to see if you would want one. Now we know that a cache in a system is generally placed between RAM and CPU to hold recently fetched data for further use. This saves some time and computing is faster. Hybrid drives too use a cache but that is between Hard Disk Drives and RAM (other than a cache between RAM and CPU).
What is a Hybrid Hard Drive (SSHD)
Late until 2012, manufacturers were making either HDDs (Hard Disk Drives) or SSDs (Solid State Drives) or both and kept them separate for use with computers. Hard Disk Drives were regular ones, but with huge amounts of storage space and still very cheap compared to Solid State Drives. SSDs are also called Solid State Disks sometimes (but there is no disk inside). The inside of a SSD is a complex integrated circuit that stores data even when there is no power. There is no mechanical action involved as in the Hard Disks and hence, saving of time in retrieving and writing data.
A Hybrid Drive (SSHD) is a combination of Hard Disk Drive (HDD) and a Solid State Drive (SSD) with the latter acting as a more as a cache rather than just a storage device. Its firmware checks what data sets are being “fetched” more frequently and stores those data sets on the SSD part of the Hybrid Drive so that the next time the CPU needs it, the data residing on the SSD part can be provided quicker. Thus, a Hybrid Drive is essentially a Hard Disk with Solid State Drive type cache for saving time in “fetch” operations.
NOTE: A “fetch” operation involves checking disks, tracks, and sectors for the required data, rotating the HDD’s magnetic heads to that point and gathering the required data. It includes the “read” operation where the data required, is made to pass below the HDD disk heads so that it can be used with “fetch”. In other words, “fetch” is simply fetching the data required by the CPU.
A Quick Look at HDD vs SSD
Solid State Drives, as we have seen earlier, are also called Solid State Disks, though no disks are involved. The construction method of both HDD and SSD are different. An HDD is essentially mechanical. It involves a number of magnetic disks where data is stored in the form of scratches to mark binary digits (0 and 1). Each magnetic disk has one or two “heads” to read/write data. The number of heads per disk depends on whether the disk is usable on both sides. If yes, then there are two heads else only one per disk.
With SSDs, there are no heads involved, nor is the need to rotate disks. In short, there is nil mechanical actions so the read/write speeds are much faster compared to the normal Hard Disks. SSDs have a complex circuit that stores binary digits representing the data stored inside it. The circuit “fetches” data almost instantly unlike HDD where disks had to be rotated before accessing the data.
Obviously, SSDs are costly compared to HDDs. If you need faster actions such as with gaming, SSDs are good for you and if you need more storage space and the average speed is okay, such as while working with video editing software, Hard Drives are better.
Reading Data on Hybrid Drive – Saving Time
By now, you know how data is read on HDD and on SSD. A mix of this is applied to reading data on Hybrid Disks which are but normal Hard Disks with a bit of SSD. A firmware is added to the design. This firmware keeps an eye on what data is “fetched” more regularly on a computer. The frequent data is stored on SSD so that the next time the CPU needs it, the Hard Disk’s disks need not be rotated. Instead, the data is provided from the SSD part of the Hybrid Drive.
This is more like reading data from RAM directly – no need to trace disk, track, sectors and rotating the disk to “read” the data. Essentially, parts of OS are more likely to be stored on the SSDs in addition to the regularly used programs.
The first time you read data on a Hybrid drive, it won’t be any faster. However, as you keep using the Hybrid drive, the firmware understands the frequently used data and makes it fast enough to satisfy.
To sum up, Hybrid Drives are new but popular alternatives to SSDs as the latter are priced costly at the moment. People needing large storage spaces and some extra speed may go for this type of storage device.
This explains what is Hybrid Drive and I hope it is explained in enough detail. If you have any thoughts, please comment.
Tomorrow we will take a detailed look at Hybrid Drive vs SSD vs HDD.
