The friend sent a 500G HP hard drive that he wanted to use as a backup drive. Suddenly whim to want to be a RAID try to see if you can improve performance. Because the two hard disk models are not the same size, you can only do a soft RAID.
test environment:
Operating System Windows 7 Professional 64-bit SP1 (DirectX 11)
Processor Intel Core i7-4790 @ 3.60GHz Quad Core
Motherboard GIGABYTE B85-HD3 (Intel Haswell)
Memory 16 GB (Zickey DDR3 1600MHz)
Hard Disk OCZ-ARC100 (120 GB / Solid State Drive )
Seagate 2T
Western Digital 500G
Graphics Card Nvidia GeForce GTX 960 (2 GB / Gigabyte)
Display BenQ BNQ793E BenQ EW2440ZC (24 inches)
Sound Card Intel Intel @ Intel Haswell Hi-Fi Audio
Network Card Realtek RTL8168/8111/8112 Gigabit Ethernet Controller / GIGABYTE
Proceed as follows:
1, backup the data after installing the hard disk, if there is no data on the trouble. The original hard disk was 2T. It took more than half a day for the backup data. Because of the lack of backup space, a lot of Japanese documentaries were lost.
2. Backup the data and convert the two hard disks into dynamic ones. Right-Computer - Manage - Disk Management Right-click on the disk name and change to Dynamic Disk.
Follow the prompts to convert both hard disks to dynamic disks.
3. Right-click on the hard disk with a small space and create a new striped volume. Striped volume is equivalent to RAID0, theoretically fast, but there is no fault tolerance, a hard disk is broken, all data is lost, in this case, if 500G hard disk is broken, 2T hard disk and 500G hard disk data in RAID Also gone. After this step, the soft RAID is completed. The 2T hard disk will automatically be divided into a large space with a 500G hard disk, and together form a RAID0. Note that the first write is a new striped volume. The striped volume is RAID 0, and the read/write speed will be faster. Space will not be wasted, but it is not fault-tolerant. If it is a mirrored volume, it is RAID1, which is half of the space, and the reading speed will be fast, but the writing will not be fast and may be slow. Fault tolerant.
4. The remaining space on the 2T hard disk can be further partitioned. Right-click on the remaining space to create a new volume. Dynamic hard disk, volume is the previous partition, in fact, is about the same!
Now that RAIA0 is done, the backup data also goes back to COPY, mainly to test whether the performance has been improved. RAID is best done with two hard drives of the same model, because my two hard drives are not the same size, size is not the same, it is also possible that the performance does not rise. If it is unlucky! White toss. .
The test software uses ATTO Disk Benchmarks. This software can test the performance of hard disk partitions. Most test software can only measure the performance of the entire hard disk. So this is the first. Test the screenshot below!
Figure 1, the following figure is a screenshot of the D drive, that is, the partition that did RAID0.
Figure 2, the following figure is a screenshot of the F disk, is a partition without RAID
It can be seen that performance has improved in addition to 2K 1K. Slow reading of small files may have some effect on random read speeds. However, I feel that the impact is not great, or that the benefits outweigh the disadvantages. Because there is very little chance of reading a large number of discontinuous small files.
The following uses FASTCOPY to test the actual speed of the COPY file. The test is from the COPY data between the Z drive and the D drive F drive. The Z drive is a virtual memory space using the Promo. The speed will definitely not become a bottleneck. SSDs are much faster and much faster! !
F disk is an ordinary partition, D disk is RAID0. It can be seen that the D disk with a soft RAID has doubled the write speed.
The above two figures are the test reading speed, and the speed increase is very obvious!
The above two diagrams test the reading of a large number of small files. There are more than 4000 files in a folder, and there are more than 1000 IK files for several K. The remaining basic file is a compressed file of several hundred K and 2M. All are ROM. It can also be seen that there is a slight increase in speed, although not more than doubled, but it has also increased by about 85%.
The same folder, writing the same speed of nearly 40% of the gap.
If you have the value of the old hard disk, you may wish to add a hard disk to try soft RAID0, maybe a small upgrade to the computer! !
Note: Be sure to back up the data before doing it. After upgrading to a dynamic disk, you cannot install the operating system. If you already have a system, the original system can be started, but you cannot install dual systems. Static transitions to dynamics are irreversible, especially if you have already done RAID0. Unless you delete all partitions, there is no way to recover back to basic disks.
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