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WhatIsU2SSD?HowaboutU2SSDvsM2SSD?AnEasyGuide

Do you know U.2 SSD? If not, you can read this post to know about it. In addition, this article also makes a comparison of U.2 vs. M.2, which will tell you which one is better. If you are using the U.2 SSD, you may want to know how to back up the U.2 SSD for data security. If so, please read on.

As we all know, the current common SSD interface types include SATA, mSATA, SATA Express, M.2, PCI-E, and U.2 (The most common hard drive interface is SATA III). AU.2 SSDis namely an SSD with U.2 port.

Then, what is U.2? U.2, formerly known as SFF-8639, is an interface standard defined by SSD Form Factor Work Group. U.2 is developed for the enterprise market and designed to be compatible with PCI-E, SATA, SATA-E, and SAS interface standards.

U.2 connector supports NVMe standard protocol and PCI-E 3.0×4 bus, which makes the U.2 SSD have a theoretical bandwidth up to 32Gbps and have advantages of high speed, low latency, and low power consumption.

This article explains deeply what SATA SSD and M.2 SSD are. It touches upon SATA Bus standard, PCI-E Bus standard, AHCI protocol, and NVMe protocol. It explains the difference about them.

How about the popularity of U.2 SSDs? Currently, HGST Ultrastar SN100, OCZ Z-Drive 6000 and other enterprise-class SSDs have a common feature, that is, they provide two form specifications. One is the traditional PCI-E expansion card model, and the other is the 2.5 inch U.2 interface disk style.

However, the U.2 SSD that can be bought by ordinary consumers includes the Intel 750 series, which includes three capacity specifications: 400 GB, 800 GB, and 1.2 TB.

The sequential reading and writing speed of theIntel 750 U.2 SSD of 1.2TB capacitycan be up to 2400 MB/s and 1200 MB/s, respectively. As for its random reading and writing speed, this SSD can reach 440000 IOPS and 290,000 IOPS, respectively. In a word, the performance is very strong. If you want to know the explanation to terminologies about disk performance, please read the recommended article.

This article explains how to measure disk performance and how to interpret the disk performance test result. It touches upon terminology like IOPS, transfer rate, sequential reading/writing, random reading/writing, and queue number.

In addition, ASUS, Gigabyte, MSI, ASRock, and other vendors have announced support for U.2, and demonstrated the new U.2 data line and U.2-M.2 converter. At present, the ASUS ROG Maximus VIII Extreme motherboard has been equipped with a U.2 interface.

When it comes to U.2 SSD, many people like to make a comparison of U.2 vs. M.2. As mentioned above, the U.2 SSD has a theoretical bandwidth up to 32Gbps, which equals to that of M.2 SSD. Since it is so, why the U.2 SSD comes out? Here are some reasons, which are also the differences between them.

The length of the M.2 SSD ranges from 30 to 110 mm. It is mainly used in portable devices such as notebooks, ultrabooks, etc. due to its small size. However, the length of the U.2 SSD is 2.5 inches. It is mainly used on servers to match with the storage interface of the enterprise data center.

The M.2 SSD is really too small. The common single-sided 2280 M.2 SSD can only accommodate up to 4 flash granules; even the most common enterprise-class M.2 SSD – 22110 – cant accommodate many lash granules.

Whats more, enterprise-class disks require complete power-off protection and a large amount of capacitors to store electricity, which is a bit overwhelming for the space of M.2 SSDs. Relatively speaking, the space of the U.2 SSD is definitely much more abundant. At the same time, U.2 SSDs are being slowly popularized in ordinary customers.

Because the hard disks of the server need to be easily plugged and unplugged, they should support hot swap feature. U.2 SSDs also support this feature. However, M.2 SSDs dont support this feature.

Further Reading: Hot Swap means that inserting or removing the device from the system without shutting down the system will not disturb the normal running of the system, thus improving the systems reliability, rapid maintainability, redundancy, and the ability torecover from disastersin a timely manner.

On the other hand, M.2 SSDs have bad heat dissipation. However, U.2 drives have relatively better heat dissipation because its back side has fins made of aluminum alloy, which is suitable for the enterprise-class high-load reading and writing.

No matter whether the U.2 SSD is used for enterprises or individuals, you should back up data regularly for data security. As for the data backup software, you can choose MiniTool Partition Wizard. If the U.2 SSD is used on server, you can refer to the following article to know how to back up server with MiniTool Partition Wizard.

The excellent server backup software MiniTool Partition Wizard can help you back up server disk and server partition safely and conveniently. Check this post in detail.

If the U.2 SSD is used for individuals, you can refer to the following steps to clone the whole disk.

Step 1:ActivateCopy Diskfeature of MiniTool Partition Wizard.

Step 2:Choose a target disk where the content is copied to and clickNextbutton.

MiniTool Partition Wizard allows you to clone the original content to a smaller disk only if the target disk can hold the content. If the space used by the original content is larger than the target disk, the

Step 3:A warning window pops up. Click theYesbutton to continue if you agree to destroy all the data on the target disk.

Step 4:Choose copy options and adjust the target disk layout. Then, click theNextbutton.

Step 5:A note window pops up. Read the note and click theFinishbutton.

Step 6:Click theApplybutton to execute the pending operations.

If you want to copy a single partition, you can clickCopy Partition Wizardto complete it.

Here is an article introducing the M.2 SSD and comparing it with the M.2 SSD. If you dont know about them, I believe this article can help you.Click to tweet

Has this article been helpful for you? Please give us your feedback. If you know any other information about U.2 SSDs and we dont mention it in this article, please leave a comment below to share. Of course, if you have problems in managing or backing up U.2 SSDs, please also leave a comment or email us at[emailprotected]. We will reply to you as soon as possible.

Author Linda has been working as an editor at MiniTool for 1 year. As a fresh man in IT field, she is curious about computer knowledge and learns it crazily. Maybe due to this point, her articles are simple and easy to understand. Even people who do not understand computer can gain something.

By the way, her special focuses are data recovery, partition management, disk clone, and OS migration.

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