workload is more random in
Nature, then the bottleneck is likely to involve the disk drives, and adding more drives will
Improve performance.
If the workload is sequential and the bandwidth pressure of the controller is high, the solution is to add a faster disk controller;
If the workload is random, the bottleneck may be the hard drive. increasing the driver can improve the performance;
. Add more disk d
the disk.
Network installation is an advanced installation, which can be completed in a few words. You should consider building servers, PXE, kickstart, and host hardware configuration... so here I mainly talk about hard disk installation.
My current environment: windows 2003, IDE hard drive 80 GB, not allocated is 27 GB. Download a grub-for-dos tool from the
Today, as you organize your pictures, found that the root directory hard disk space has been left, and the site and all related files are mainly placed in the root of the data directory (/data), but the/home is there is room, and do not want to put the file under/home, only add a new hard drive, for later/ The file management of the data directory is also better.
When a linux system Red Hat Enterprise5.7 is used to mount a Seagate ntfs mobile hard drive, an ERROR prompt box is displayed: the volume 'eaget-nqh' user the ntfs file system which is not supported by your system. here, 'eaget-nqh' is the name of my mobile hard drive.
Find
In order to facilitate the use of the Linux system on the NTFS format of the USB flash drive and mobile hard disk, so write down for record, easy to see.The first thing to mount the NTFS-formatted mobile hard disk on a Linux system is to install the NTFS-3G software:Http://l
1 fdisk-l view hard disk and partition informationThe commands under my system (ArchLinux) have the following effects:From the above picture can be learned that the system only mount 1 hard drives, named SDA, it has 2 primary partitions, SDA1 and sda2, as for why so named, you can refer to my other blog: Linux mountIt is obvious that the
[Data recovery failure description]
A Linux Web server, DELL R200, manages about 50 sites and uses a single SATA 160GB hard drive. In the normal use of sudden downtime, try to start failed again, the hard drive removed detect the existence of about 100 bad sectors.
After a
[Root@li411-50 ~]#In the above argument:/dev/xvda is the hard drive occupancy
And Tmpfs is the virtual space.
Sample
In the following example, DF displays information about all the file systems that are already mounted on the local system:www.111cn.net@linux:~$ DFFileSystem 1k-blocks Used Available use% mounted on/dev/sda6 284234328 21624120 248148820 9%/None
Article Title: let linux support your DMA66 hard drive. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.
I am using a Promise ultra DMA 6
, motherboards from the Pentium2 level support smart
After the BIOS starts, it's the operating system level.
Unfortunately, Windows does not have a built-in smart tool (Third-party tool software is required)
Well, on Linux, there was a smart support early on.
If you install Linux on a virtual machine such as VMware, you can see a service startup error when the system starts: SMARTD
This server is the d
Tags: CentOS 7 scan LSBLK System partition state Inux method No
Boot status Insert Drive
Do not shutdown command
"- - -" > /sys/class/scsi_host/host0/scan
Note echo "- - -" -There are spaces in the middle
fdisk -lor lsblk Check to see if a new hard drive is found
If it doesn't take effect, try to host0 replace host1 or ho
Linux hard drive path-general Linux technology-Linux technology and application information. For more information, see the following section. Generally, a single machine in Yangchun does not have any special circumstances. Once an external
Install Linux on SATA hard disk (earlier versions)-General Linux technology-Linux technology and application information. For details, refer to the following section. You do not need to read the latest version.
Sata hard drive
===========================
May 10, 2017 Wednesday 09:04:01 CST
Memory Usage | [USE:15738MB] [FREE:110174MB]
OK not
required
===========================
May 10, 2017 Wednesday 09:05:02 CST
Memory Usage | [USE:15742MB] [FREE:111135MB]
OK not
required
===========================
May 10, 2017 Wednesday 09:06:01 CST
Memory Usage | [USE:15758MB] [FREE:111117MB]
OK not
required
===========================
May 10, 2017 Wednesday 09:07:01 CST
Memory Usage | [USE:15772MB] [FREE:110138MB]
OK not
required
First Use SSH login to the Aliyun server SSH landing software I use putty baidu inside download.
Then use your root account to log in. The command to modify the password is passwd
How to mount the data disk as follows:
The first step is to use fdisk-l to view your hard driveShows the following
code is as follows
copy code
[root@ay1105190 13348b ~]# fdisk-l disk/dev/hda:53.6 GB, 53687091200 bytes 255 heads, Secto
Windows 7 Hard Drive installation Ubuntu 14.04 Graphics tutorialPart of the installation diagram:The following installation choose the default, do not change anything ( for the Dish rookie ).Click Restart Now.If you have not done this tutorial, take a look at some of the following scenarios that may be helpful to you.Attention:(1) When you choose the device to install the boot launcher, you can select our s
Will there be a tragedy when I use a mobile hard drive to start linux? -- Linux general technology-Linux technology and application information. For details, refer to the following section. The Patents of a mobile app to start linux
=" Wkiol1sh4agsbrjxaaitnixna9k483.jpg "/>5. Configure the Edit vi/dev/fstab ( ensure the next system boot automatically start loading the hard drive )650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/54/9E/wKiom1SH32ux4IZZAAGMK_rp87A289.jpg "style=" float: none; "title=" 6.jpg "alt=" Wkiom1sh32ux4izzaagmk_rp87a289.jpg "/>6. View the disk size du–lh/opt650) this.width=650; "src=" http://s3.51cto.com
Example: The new disk's device file name is/dev/vdb size 100GB. #fdisk-L View the new Disk 1, partition the new disk #fdisk/dev/vdb prompt operation p print n new d Delete W operation effective Q exit Operation W#partprobe Forcing the kernel to re-locate the partition table (update partition table) Here we add a partition/dev/vdb1 size 40GB 2, partition format #mkfs-t ext4/dev/vdb1 format to EXT4 Format 3, temporarily mount a new hard disk in a
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