how to defrag ssd

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Linux to see if the hard drive is an SSD (SSD)

The following switch from Baidu:Recently in preparation for testing, you need to see which machines are mounted SSD hard drives, Google has seen a lot of methods, but all foggy, do not know how to determine. SSD hard disk seems to use the SCSI interface, so according to the name of the drive letter is not to be judged. The last group of Eric God told LSSCSI Tools, try it, very simple, the display is also ve

i7 4790 Z97-ar SSD SSD installed some experience

Today the computer finally installed, I in the Valentine's Day around Tanabata with a desktop for the development, during the period encountered some problems to share with you, I hope to help some friends.1 Buy HIMD line, all parts assembled well, I realized a problem did not buy HIMD line, my ASUS Z97-ar motherboard default Support HIMD interface, while the display supports both VGA and HIMD interface.The seller is free to send the VGA line, for me and then eggs.2 Radiator Xuan Ice 400 when I

Can Win7 use disk defragmentation on SSD solid-state drives?

characteristics of solid-state hard disk reorganization of the related functions of innovation, but in the current solid-state hard disk flash characteristics, Its function is also very small. According to the above argument, some netizens give the following opinion: As early as starting from WIN8, the disk component has not been called "Disk defragmentation (Diskette defrag)", renamed "Optimized Drive (Optimize drive)", with the ability to defragm

SSD-based database performance optimization

Nor and NAND Nor and NAND are both Flash technologies. Nor is developed by Intel. It is somewhat similar to memory and allows direct access to any memory unit through an address. The disadvantage is: low Density (Small capacity), low write and erase speeds. Nand is developed by Toshiba. It features high density (Large capacity) and fast write and erase speeds. However, it can only be accessed after address conversion through a specific IO Interface, some are similar to disks. The USB flash drive

Break through the I/O bottleneck of Informix SSD

So far, I have been running the master Informix development database server on SSD for more than a year. My development server is equipped with 12 CPU cores, 24 gb ram, 5 TB disk space, and a 5 gb ssd. I used this server to develop the Informix Data Warehouse project and run So far, I have been running the master Informix development database server on SSD for mo

Can ssd be used as a redo disk?

Can ssd be used as a redo disk? 1. ssd has write wear and tear, and the ssd write performance is not very good. ssd is only very good for random reading, because it does not need to be searched. Ssd is easy to damage. 2. index tablespace and temporary tablespace are good cho

Let the SSD speed fly. Solid state HDD Optimization techniques Daquan

Let the SSD speed fly. Solid state HDD Optimization techniques Daquan However, the other aspects of SSDs are obvious, so it has become the necessary hardware for most users installed. In terms of usage, SSD is slightly different from the traditional HDD, and it is necessary to go through a series of settings if the SSD is to really perform its performance. F

Do you want to upgrade the SSD in your notebook?

of the computer. So we say, now the bottleneck of computer hardware is the traditional mechanical hard disk. That being the case, we can see that improving the performance of the hard drive can improve our experience of using the computer, so SSD turned out. SSD because of its storage medium and principle and traditional mechanical hard disk is completely different, so greatly improve the read and write s

Can I create a traditional raid on an SSD?

When asked whether traditional raid can be built on SSD, the first response should be "yes, but trim command support is required ". On the Internet, we can also see that many people use SSD to create raid, but basically it is configured as RAID 0 or raid 1. Few people will build RAID5. Why? The answer is very simple. If you configure parity-raid like RAID 5 on the basis of

Laptop Upgrade SSD Solid State Drive method

It has become fashionable for computers to upgrade their solid-state drives to enhance their speed and nuclear performance. However, a variety of different computers, can upgrade SSDs, how to upgrade SSD to achieve the speed of nuclear performance, but the biggest problem of upgrading SSDs. In order to meet the needs of upgrading the SSD friends, this computer upgrade S

Basic knowledge of flash memory/SSD

I haven't updated my blog for a long time. A while ago, I experienced my first job hopping, which is much harder than I thought. After all, it was the first job and it was quite sad to leave. The new job has just begun, and we hope everything will go well. This blog was written during May 1, and is officially posted today. It is a good habit to write a technical blog. I want to keep it! When I was in the previous job, I always wanted to try Flash/SSD

MLC SSD, with in-volume is 3,000 times P/E

What is a solid state drive and how long is the SSD life?SSD refers to the use of flash memory chip composed of SSD SSD, is the use of flash flash memory particles as a storage unit, no longer using traditional mechanical storage methods, the use of simulated virtual hard disk access and sectors, etc., can also simply

AS-SSD how to look at 4k alignment

As SSD How to use? How do you look at 4k alignment?   About as SSD software: As SSD is a professional SSD (SSD) transmission Speed Test tool, it can not only test the speed of solid-state hard disk reading, but also can detect

What is SSD and its advantages and disadvantages?

What is SSD? A Solid State Disk (Solid State Disk or Solid State Drive), also known as an electronic hard Disk or Solid State electronic Disk, is a hard Disk consisting of a control unit and a Solid State storage unit (DRAM or FLASH chip. The interface specifications, functions, and usage of SSD are the same as those of common hard disks, and the product shape and size are also the same as those of common h

PCIe SSD introduction and application (I), pciessd introduction and application

PCIe SSD introduction and application (I), pciessd introduction and application SSD with SATA/SAS interfaces has been available for more than a decade and has been widely used in the personal consumption field. However, its performance still cannot fully meet the high throughput and low latency requirements of enterprise users, A few years ago, the world's first PCIe interface

OSX: it may not be a good idea to enable the ssd trim function.

OSX: it may not be a good idea to enable the ssd trim function. A long time ago, since people started loading SSD to Mac machines and OSX began to support TRIM, people began to pay attention to enabling the TRIM function of OSX to optimize SSD performance, this is the slowest operation for SSD, especially when there ar

CEpH: mix SATA and SSD within the same box

The use case is simple, I want to use both SSD disks and SATA disks within the same machine and ultimately create pools pointing to SSD or SATA disks. in order to achieve our goal, we need to modify the crush map. my example has 2 SATA disks and 2 SSD disks on each host and I have 3 hosts in total. To revoke strate, please refer to the following picture: I. Cr

SSD required for Linux platform (Ubuntu for example)

From: http://yblog.org/archive/index.php/11734 The biggest difference between an SSD and a general traditional hard drive is that its memory-to-life ratio is limited, and the fast Memory (flash memory) in the same data area) SSD memory uses a special algorithm built in the control chip to evenly distribute data to the fast-moving memory chip in different regions. For Ubuntu Linux, my Acer 3750g laptop is Ub

Upgrade the MacBook's CD-ROM to SSD

This article has a total of four parts:1. Description of Macbook Pro2. Pre-Preparation3, formally began to replace the SSD4, the system installed on the SSD5. Problems that ariseMacbook Pro Scenario Description: My MBP is 12 years in the 13-inch MBP low, in the rise of 10.10 after the card does not work, so ready to change the CD-ROM drive to SSD, and then upgrade the memory bar; Pre-Preparation 1, determine the number of SATA CD-RO

Deep analysis of disk caching mechanism under Linux and the problem of SSD's writing amplification

Some time ago in developing a system that uses SSD for caching, a large amount of disk caching occurs when writing data at high speed. Too much disk caching is very dangerous if there is a problem with the machine if it is not written to disk in a timely manner, which can result in a lot of data loss, but if the data is brushed into the disk in real time, the write efficiency is too low. In order to understand the Linux system of this disk write chara

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