raid expander

The latest HP X86 server is the GEN8 series, which uses the ACU tool to create RAID, which is a graphical interface that can be said to be friendlier.Originally usually if is to buy a new server, standard two hard disk, then the default is done Raid1, but there are accidents, due to the large amount of PC server, a lot of this situation, you need to manually configure the raid, here use my photo to explain.

I. LVM logical volume Management 1. Definition Logically combine multiple physical partitions/disks into a larger whole, and divide different logical partitions. The size of logical partitions can be expanded and reduced as needed. 2. LVM Concept PV: physical volume VG: volume group (which can contain 65534 PES) LV: logical volume that truly stores data PV physical volume ---> VG volume group ---> LV logical volume ---> Format ---> mount the File System 3. LVM management commands Function physic

1. How to select and configure raid with the highest read/write speed and fault tolerance capability How to select and configure raid with the fastest read/write speed and fault tolerance capability?The following two aspects can be discussed in detail:1. read/write speedRaid random sequential Level read perf write perf0) when there are too many threads, too many threads1) when there are too many threads

The same thing that I see is the case of the RAID card LSPCI stands for list PCI. Think of this command as "LS" + "PCI". This would display information about all the PCI bus in your server. Apart from displaying information about the bus, it'll also display information about all the hardware devices Connected to your PCI and PCIe bus. For example, it would display information about Ethernet cards, RAID co

Raid:Common RAID levels:RAID 0:Operating mode: The data is striped first, and then stored to the hard disk.Space utilization: 100%Whether redundancy is supported: noPerformance: Disk IO increased (depending on the number of disks)Requires at least 2 disksRAID 1:Operating mode: There is a disk for the mirror diskSpace utilization: 1/2Whether redundancy is supported: YesPerformance: Write performance degraded, read performance unchangedRequires at least

I. Raid Definition RAID (Redundant Array of independent disk independent redundant disk array) technology is the University of California, Berkeley, 1987 It was initially proposed to combine small and low-cost disks to replace large and expensive disks. At the same time, it was hoped that access to data would not be damaged when the disk fails. Develop a certain level of data protection technology.

Analysis on raid Let's analyze the main components that affect computer performance, including CPU, bus I/O of the motherboard, memory I/O, hard disk I/O, and Nic I/O. Now the CPU performance is good, however, the overall I/O performance of the computer is low, seriously affecting the computer performance. The current computer's bus I/O and memory I/O speed can reach more than 5G/s, however, disk IO is usually low. Let's analyze several common methods

Dell PERC 201710p import RAID card array information Dell PERC 201710p import RAID card array information 1. Unplug the hard disks of one server (A) and insert them to another server (B) with the same configuration in the same order) 2. Start the server (B) 3. Press ctrl + R on the keyboard prompt To Go To The RAID card configuration page. Move the curso

Redundant array of #RAID卷 independent disksRAID is a combination of multiple independent hard disks (physical hard disks) in different ways to form a hard disk group (logical hard disk), providing higher storage performance than a single hard drive and providing data backup technology. Different ways of composing a disk array become RAID level (RAID levels).The f

RAID: Redundant Arrays of inexpensive disk fault tolerant low-cost RAID arrayA number of technologies (software/hardware) that consolidate many small disks into a single large storage device with the ability to protect data and improve storage ratesdisk array Benefits : Data security, reliability (data rebuild, restore) Improve read and write performance Increase capacity Grade categor

Linux raid detailed RAID that is, an inexpensive redundant disk array (Redundant array of inexpensive disk), starting with the Linux2.4 kernel, Linux provides software RAID. This is achieved by organizing multiple disks in a certain mechanism, improving IO performance, increasing durability, and supporting redundancy.RAID Type:External disk array: With expansion

A new Linux server is being taken, ready to check for configuration raid.check for a RAID card first: Copy Code code as follows: # Dmesg|grep-i raid Mptsas:ioc0:attaching RAID volume, Channel 1, ID 0 Device-mapper:dm-raid45:initialized v0.2594l Md:autodetecting RAID arrays. Obviously the

A certain day of the month, is a friend to start a new SATA hard drive that day, I am alone in the computer city outside the platoon irresolute, met this gentleman, came to ask me: "Sir has for my new hard drive and the old hard drive mixed raid write a little what not?" "I said no," he told me, "Sir, write a few, many friends need to read the article of the Gentleman" The above is not responsible for the words of the preface What is mixed

RAID (Redundant array of independent disks ) RAID is an abbreviation for the English Redundant array of independent disks, which is known as a redundant array of independent disks . RAID technology is divided into several different levels, each of which offers different speeds, security and cost-performance. Depending on the actual situation, selecting the appro

Implementation of soft raidMdadm-C: Creates an array.-A: assembly-F: Monitoring-D--detail: Displays details.Major: The main device number that distinguishes the device category.Minor: the secondary device number used to distinguish between different devices in the same category.-c/dev/md# Specifies the MD name created.-a{yes|no}: Automatically create a device file for the RAID device you created/dev/md#-L: Specifies the level of

1. Disk Management#提示没有partprobeYum-y Install parted#新硬盘新建分区 and change the type to Linux Raid AutoDetect#非交互方式, note that there is a enter key between 1 and TFDISK/DEV/SDE Fdisk.txt:NP11TFdW#新建分区, note that there is a return enter between 1 and WFDISK/DEV/SDF Fdisk.txt:NP11WQ#将磁盘格式化为ext4文件系统Mkfs.ext4/dev/sde#2. Radi Management#以两块硬盘做raid0,-l0 says Raid0,-n2 says raid with 2 hard drives#-a answer all prompt

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/blog/item/4f152e3d820dfc0abba167ca.html FT i

RAID is a "cheap duplicate disk array", meaning that multiple drives using a commercial product can be used for high availability or performance purposes. There are also different combinations depending on the number of drives used, the purpose, and the number of hard drives that are fault tolerant. 1.RAID 0A principle:RAID 0 is the total number of all N multi-drive, when pressed into the data, the data wil

1. Server and Storage System Server: provides compute power and service for network requests. Storage System: storage device + Storage Management System +raid Disk system, accept I/O requests. Storage Architecture: DAS (direct Attach STorage) storage device connects directly to the server NAS (Network attached Storage) network-attached storage that uses networking technology to connect storage systems via a switch. SAN (S

A new computer is equipped with a dual system. windows is used to play games and linux is used to write code. I bought two dedicated 1 TB hard disks to build RAID 0 and use parallel I/O to improve computer performance. Choose the motherboard when deliberately selected to support RAID motherboard, msi B85-G43 GAMING, can use msi super raid technology, but after bu