Shulou(Shulou.com)05/31 Report--

This article is to share with you about the SSD solid state disk parsing and deployment points for attention is what, the editor feels very practical, so share with you to learn, I hope you can get something after reading this article, say no more, follow the editor to have a look.

Get an INTEL SSD 710SSD from a friend and study it by the way. SSD is referred to as solid-state storage technology, which can be divided into two ways:

SSD based on flash memory: uses FLASH chip as storage medium, which is also commonly known as SSD. Its appearance can be made into a variety of patterns, such as notebook hard disk, micro-hard disk, memory card, flash drive and so on. The biggest advantage of this kind of SSD solid state memory is that it can be moved, and the data protection is not controlled by power supply, so it can adapt to various environments, but its service life is not high (about 5 years), so it is suitable for individual users.

SSD based on DRAM: DRAM is used as the storage medium, and its application range is narrow at present. It imitates the design of traditional hard disk, can be used for volume setting and management by file system tools of most operating systems, and provides industry-standard PCI and FC interfaces for connecting hosts or servers. The application mode can be divided into two types: SSD memory and SSD memory array. It is a kind of high-performance memory, and its service life is very long, but it needs independent power supply to protect data security.

Solid-state hard disk (Solid State Disk, IDE FLASH DISK) is composed of control unit and memory unit (FLASH chip). To put it simply, it is a hard disk made of solid-state electronic memory chip array (currently the maximum capacity is 1TB). The interface specification and definition, function and usage of solid-state hard disk are exactly the same as those of ordinary hard disk, and they are also completely the same as ordinary hard disk in product shape and size. Widely used in military, vehicle, industrial control, video surveillance, network monitoring, network terminals, power, medical, aviation and other fields, navigation equipment and other fields.

Compared with traditional hard drives, SSD solid state drives have the following advantages:

First, the speed of data access is fast. According to the relevant media tests: in the same configuration of the laptop, when running large image processing software, you can clearly feel that the SSD solid-state memory is faster to save or open files.

Second, durable, shockproof and fall-proof. Because all flash memory chips are used, there are no mechanical parts inside the SSD solid-state memory, so that normal use will not be affected even when moving at high speed or even accompanied by flipping, and the possibility of data loss can be minimized when the laptop accidentally falls or collides with hard objects.

Third, the work is very quiet, without any noise. Because there is no mechanical motor and fan, the noise value of SSD solid state disk is 0 decibels.

Fourth, SSD solid state drives weigh 20-30 grams less than conventional 1.8in hard drives, but don't underestimate these weights. On portable products such as laptops and satellite locators, smaller weights are portable. In addition, the weight reduction also makes it possible for laptops to carry multiple pieces of SSD solid-state memory.

Take a look at the difference through the chart:

The INTEL SSD 710s use MLC NAND multilayer flash chips from 25nm's new technology, while introducing the so-called high reliability technology (High Endurance Technology/HET), which combines firmware, controller and long-life NAND flash chips developed by Intel, bringing ultra-high performance and reliability to data centers, financial and financial, embedded, Internet portals, search engines, and other storage and server applications. It can run continuously from 24 to 7 to 365.

INTEL SSD 710adopts standard 2.5in specification, interface SATA 3, highest continuous read and write speed 270MB/s, average read delay 75 microseconds, write 85 microseconds, average failure interval 2 million hours, standby power consumption 0.7W, read and write 3.7W, support AES 128bit hardware encryption, support S.M.A.R.T. Technical.

Considerations for installation and deployment of INTEL SSD 710SSDs:

1. The choice of operating system. In the past, WINXP or VISTA could not be installed on solid state drives, because the previous systems were not designed with SSD applications in mind, and only systems after Win 7 supported it. Be careful not to use GHOST and stripped-down versions of WIN7 to install on solid state drives. To identify solid state disks on suse linux 10, drivers need to be installed and optimizations need to be made to take full advantage of solid state disks. Other LINUX versions have not been tried yet.

2. When installing a WIN7 system, you need to enable AHCI in the disk settings of BIOS. For SSD, due to the change of storage mode, the original disk defragmentation becomes redundant, even harmful, so we need to disable disk defragmentation. In addition, Superfetch pre-reading for traditional mechanical hard disks can also be disabled.

Note: SSD is recognized during a new installation of Win7, and Disk Defragmenter (disk defragmentation) on the SSD partition is automatically disabled.

3. Reasonable spatial planning. SSD solid state drives are expensive and space is limited, so we don't need to install all the programs on SSD, we just need to install the system and frequently used programs on SSD. Of course, you can also set the temporary exchange files or cache files of some programs on SSD, such as IE browsers, which can greatly increase the speed of previously opened pages (by default, the cache files of browsers such as IE or Firefox are on the system disk and generally do not need to be modified).

4. Turn off the system restore and hibernation of WIN7, as this will damage the solid disk.

5. Virtual memory, set 4G or above to 768-1024, which does not need to be too large. Because the speed of SSD is relatively fast.

6. Do not use SSD as a download disk. The life of SSD mainly depends on the number of writes, so often using SSD as the target disk to download and write a large amount of data will shorten the life of SSD. At the same time, the bottleneck of downloading lies in your network. Using SSD will not improve your download speed.

Supplementary solid state disk test:

Simple read and write performance test of solid state disk: (quoted from Muzi blog)

You can test the write-only performance of a disk by using dd if=/dev/zero of=/file

Use dd if=/file of=/dev/null to test the pure read performance of the disk

Use dd if=/file1 of=/file2 to test the read and write performance of the disk

The results of testing the ssd hard drive are as follows:

# time dd if=/dev/zero of=/data/test bs=8k count=8388608

The result is 305MB/s, it takes time to real 3m45.452s user 0m1.803s sys 2m41.418s

# time dd if=/data/test / dev/null bs=8k count=8388608

The result is 236MB/s, it takes time to real 4m50.865m user 0m0.044 sys 0m52.169s

Compared with ordinary hard drives.

# time dd if=/dev/zero of=/home/test bs=8k count=8388608

The result is 52.5MB/s, and it takes time to real 21m44.359s user 0m1.440s sys 2m43.023.

SSD is really powerful!

These are the matters needing attention in the parsing and deployment of SSD solid state drives. The editor believes that there are some knowledge points that we may see or use in our daily work. I hope you can learn more from this article. For more details, please follow the industry information channel.

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