Article Title: how to create, delete, and restore hard RAID 1 in SunV440. 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.
On the Sun Fire V440 server, you can use the onboard Ultra-4 SCSI controller to configure the hardware disk image. It performs better than convention
In the article "use of software RAID in Linux", we talked about the basic concepts of software RAID in Linux and how to use mdadm program to manage software RAID devices, this section describes how to create, delete, stop, and expand a software RAID device, and how to manage its metadata and bitmap data. In this articl
I wanted to write one by myself, but I was shameless to repost it when I saw someone on the Internet who had already written it.
I marked my remarks in red letters.
I also need to add several mdadm commands. In case of any loss, I will try again.
1. Remove a partition from raid
Mdadm-manage/dev/md1-Remove/dev/sda1
2. Disable an MD device.
Mdadm-Stop/dev/md1
See: http://hi.baidu.com/enjoyunix/b
Have you ever thought of making soft RAID for low-end servers? You may have thought about the redundancy of your workstation with disk mirroring without purchasing a hard RAID control card. Have you ever had painful configuration experiences that deterred you from soft RAID on Unix systems?
The FreeBSD 5.3 and higher versions are added to Gmirror (8); it lets yo
1. What is RAID1?
RAID1, which can be called an image, writes data to multiple disks. For example, if A group of data is called A, data exists like this: A and A. In this way, data security is high, but performance is poor.
Two or more groups of N disks are used as images for each other. In some multi-threaded operating systems, the read speed is good, and the write speed is slightly reduced. Unless the primary disk and image with the same data are d
, /dev/sdb1,/dev/sdc1,/dev/sdd1,/dev/sde1, and specify the partition type as "fd ", this will enable the Linux kernel to recognize them as RAID partitions and automatically detect and start each boot. Run the fdisk command to create a partition.
# fdisk /dev/sdb
After entering the fdisk command line, Run Command n to create a partition, command t to change the partition type, command w to save the partition table and exit, and command m
I have described in detail in the Linux disk array technology (a) several types of RAID disk arrays, principles and detailed steps for creating RAID 0. Then this document focuses on how to create a RAID 1 technology:650) this.width=650; "src=" Http://s2.51cto.com/wyfs02/M02/8A/F0/wKiom1g_mpLR9lR4AACcfJsTuUc372.png "tit
HP ProLiant SL210T server, typically with two array cardsA server comes with a Dynamic Smart array b120i RAID Controller, a Smart array P420 Controller for slot card slotsHere we use the Smart array P420 RAID 1 type array configuration for the server's disk, and the configuration process is as follows:1, the server boo
According to the order list, the HP rx2660 minicomputers in various cities are configured with 4 146 gb sas 10 k 2.5 inch hard disks. When the operating system is installed, two disks are automatically made into RAID 1, the principle is to prioritize hard disks with a large slot number (from left to right, such as 1, 2, 3, 4, 5, 6, 7, and 8 ).
Check whether the
1. What is raid1?
Raid1, which can be called an image, writes data to multiple disks. For example, if a group of data is called a, data exists like this: A and A. In this way, data security is high, but performance is poor.
Two or more groups of N disks are used as images for each other. In some multi-threaded operating systems, the read speed is good, and the write speed is slightly reduced. Unless the primary disk and image with the same data are d
]Pvmove [Pvremove]Pvremove [PVs]PVS//View physical volumes[Pvscan]Pvscan//Scan a physical volume on your computer[Restore]Restore-f -T view the backup file for important data-C View whether the backup and actual files are different, and output different files-I This is an interactive command that can restore some files-R Restore the entire file system-H View information such as Inode,label in a full backup-D and-C can be used to detect the subsequent mount points and the different files within t
System Disk categoryIn Windows 2000 Server, disks are classified into basic disks and dynamic disks.Basic disks comply with the partition-oriented solution in the disk organizational structure of Windows NT Server 4.0. When you install the Windows 2000 Server operating system, the system automatically initializes the physical disk as a basic disk. You can create and delete primary partitions, extended partitions, and logical partitions on a basic disk. You cannot create disk images.A Dynamic Dis
Soft RAID 1 replace bad disk 1. buy a hard disk of the same size. install the new hard disk on the machine. partition the hard disk and set the t type to: quot; fd quot; (the new drive letter is/dev/sdb # fdisk/dev/sdb4. run quot; partprobe quot; let the kernel reload the partition table 5. stop RAID1 mounting... soft RAI
boot-loader understands MD/v1.x metadata, or use
-- Metadatabase = 0.90
Mdadm:/dev/sdb1 appears to contain an ext2fs File System
Size = 31456256 K mtime = Thu Jan 1 08:00:00 1970
Mdadm: size set to 31439744 K
Continue creating array? (Y/n) y
Mdadm: defaulting to version 1.2 metadata
Mdadm: array/dev/md0 started.
[[Email protected] ~] # Cd/
[[Email protected]/] # Cat/proc/mdstat
Personalities: [raid1]
Md0: Active raid1 sdb1 [
Soft Raid 1 Replace bad Disk 1. buy a hard disk of the same size. install the new hard disk on the machine. partition the hard disk and set the t type to "fd" (the new drive letter I added is/dev/sdb # fdisk/dev/sdb 4. run "partprobe" to allow the kernel to reload the partition table. stop RAID1 mounting # umount/dev/md0 6. remove the damaged device # mdadm/dev/m
power-on Boot
When you see this interface, press CTRL + C to enter the array card setup interface as prompted (6i card is also the case)
Press ENTER directly to enter the next action
Use the TAB key to switch to raid
Here's how to delete the array
power-on Boot
The above article is the cloud Habitat Community Small series for everyone to organize the Huawei R
RAID HTML5 svg 2D Getting Started 1-svg overviewSVG Scalable Vector Graphics (scalable vector graphic) is a graphic format for describing two-dimensional vector graphics based on Extensible Markup Language (XML). SVG is a new two-dimensional vector graphics format developed by the web, and also the standard of network vector graphics in Specification. SVG strictly conforms to the XML syntax and describes th
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.