ssd raid5

in sequential read and write performance, sequential reading can reach the 82.4mb/s, basic and mechanical hard disk performance level, the random read and write performance slightly improved, not very obvious. Considering the high requirements of TC for Random Read and write performance, the USB drive with 3.0 interface is still difficult to meet the performance requirements.2.3 Test Result AnalysisCombined with the above test results, slow write speed is the main performance bottleneck of the

analyzed. Locate the possible cause of the problem and try to make the following adjustments on the 24 master database: After the above adjustments, I/O became stable and there was no larger fluctuation. For the sake of insurance, project A decided to use an SSD-equipped model to migrate the master database, and migrate the 24 slave database 27. After the migration is completed, the SSD and MySQL InnoDB pa

This article from http://ssd.zol.com.cn/575/5753057.htmlIn the use of SSD, some users may encounter the computer accidentally power down or crash and forced power outage, the system is abnormal, scan the SSD and found a bad block, and then a hurry to stomp even want to return to the factory repair.In fact, the solid state drive after the bad block is not a serious problem, the following the author of this q

Latency of next-generation SSD controller based on low-density Inspection Author: Stephen BatesLatency Variability In the previous blog, I talked about how the Error Correction Code (ECCS) in the enterprise-level SSD controller is being converted to Low-Density Parity Check (Low-Density Parity Check. This article also implies that this conversion will have a profound impact on the latency in the next-genera

compatibility with Sata hard disks. SAS interface technology is backward compatible with Sata. In terms of interface standards, Sata is a sub-standard of SAS. Therefore, SAS controllers can directly control SATA hard disks, but SAS cannot be directly used in Sata environments, because the SATA controller cannot control the SAS Hard Disk SSD SSD is a technology that discards traditional magnetic me

I bought my first SSD more than 5 years ago (late), for my white MacBook Core2duo 2.0 Ghz. It May is needless to say that my MacBook ran faster than many MacBook Pro's at that time. The look on peoples faces when they saw my MacBook boot faster than their MacBook Pro is unforgettable.By, time I was also experimenting with running 2 x 8GB CompactFlash with SATA converters in RAID-0 mode in my complete Ly silent (but old and under-clocked) Pentium 3 Lin

I updated my old ThinkPad t410i laptop six months ago and purchased the Intel SSD 330i 240G in the Amazon sea in the United States. PS: The purchase price of USD 129.99, now the latest 335i 240G almost to USD 200, SSD true value. ) Recently found in the Windows 8 64bit operating system, the password need to wait until 1-2 minutes to enter the system, long wait for Microsoft's loading, sleep wake up after t

Uncover new features of SQL Server 2014 (2)-SSD Buffer Pool (buffer Pool) expansion, 2014 Buffer Introduction Another good feature in SQL Server 2014 is that SSD can be virtualized into a portion of the memory for the SQL Server data page buffer. By using SSD to expand the Buffer-Pool, a large number of random IOPS can be carried by

Zhang Hua posted: 2016-03-23Copyright Notice: Can be reproduced arbitrarily, please be sure to use hyperlinks in the form of the original source of the article and the author's information and this copyright notice(http://blog.csdn.net/quqi99)ordinary hard disk does not really delete data from the hard disk, only the operating system marked for deletion, the next direct overwrite write, but SSD physical overwrite write is very slow (for

Disk defragmentation is the Disk Cleanup optimization tool with Windows, when the computer does not install other optimization software, you can directly use Disk Cleanup to solve the miscellaneous files in the hard drive, to ensure the life of the hard disk, but also to improve the operating efficiency of the computer machine. But in the Win7 system, there are many partners want to know that SSD solid-state hard disk cleaning? Here is a small weave t

perhaps SSD (solid state Drive) compared to the mechanical hard drive, the speed rise is really fierce, the computer boot to enter the system from the minute to the full turn into seconds reading time. In fact, the benefits of SSDs is not only in the speed of change, if only hundreds of yuan investment in exchange for these, it is too young! SSD structure is relatively simple, there is no rotating disc, ma

This article is for reading book next Generation Databases:nosql, Newsql, and Big Data Chapter 7th: The End of Disk? SSD and In-memory databases notes.The disk is dead?Bill Gates said in 1981: 640K of memory should is enough for anybody. In 2001, he realized that the previous statement was wrong: I ' ve said some stupid things and some wrong things, but not that. Since the birth of the first database, database experts have

Introduction Another good feature in SQL Server 2014 is that SSD can be virtualized into a portion of the memory for the SQL server data page buffer. By using SSD to expand the buffer-pool, a large number of random iops can be carried by SSD, thus greatly reducing random iops and page-out for data pages. SSD as buf

How to choose mechanical hard disk and SSD The giants of the tide we all see in the eyes of pain in the heart, after all, they are accompanied us through a lot of years old brand. And for consumers, in the end should buy large-capacity mobile hard disk products good or fast technology strong (mobile) solid-state drives good? Why did the traditional mechanical hard disk "fall"? Perhaps for most of the computer users who do not have acc

SSD paper Reading (Wei liu--"ECCV2016" SSD single Shot Multibox Detector)Directory Author Reasons for the selection of articles Method Summary Method details Related Background supplement Experimental results Comparison with related articles Summarize authorreasons for the selection of articles Good performance, single stage Method Summary Int

ArticleDirectory Crystaldiskmark: Atto disk benchmark: HD tune Pro: Crystaldiskinfo: As SSD benchmark: After purchasing hard drives, SSDS, USB flash drives, storage cards, and other devices, we all want to fully understand their performance, especially the disk read/write speed. Or, after the device is installed, you also want to test whether the read/write speed of the hard disk meets the manufacturer's nominal value. In

Main reference HTTPS://GITHUB.COM/WEILIU89/CAFFE/TREE/SSD get SSD code, download complete with a Caffe folder git clone https://github.com/weiliu89/caffe.git cd caffe git Checkout SSDGo to the downloaded Caffe directory and copy the configuration file CD Caffe CP Makefile.config.example Makefile.config Compiling Caffe Make all-j8 //-j16 according to the processor configuration of this machine, 16 is the

Let's look at the difference between SSD and traditional mechanical hard drives. The following figure can be seen, the traditional mechanical hard disk by the disc, magnetic head, rotating shaft, control motor and other parts, working disc rotation, magnetic head positioning in the disc at the designated location for reading and writing operations, in a sense and the structure of the old phonograph similar. The advantages of traditional hard disk are

Attribute SSD (solid state drive) HDD (hard disk drive) Power draw/battery life(Power Consumption/battery life) Less power draw, averages 2-3 Watts, resulting in 30 + minute battery boost√(Less power consumption, with an average of 2-3 Watts, resulting in 30-minute battery boost) More power draw, averages 6-7 Watts and therefore uses more battery(More power consumption, with an average of 6-7 Watts, so more batteries are used)

, but also reduces efficiency, so it is imperative to increase the capacity of a single sector. 4 K not alignedWhat is SSD?Solid State Storage Technology, referred to as SSD. there are two types: SSD based on flash memory: flash memory is used as the storage medium, which is also a common SSD, such as the usb flash dis