adaptec raid

An old hard disk is attached to the server. if you want to format the historical data and save it, use fdisk to report the following error: An old hard disk is attached to the server. if you want to format the historical data and save it, use fdisk to report the following error: /Dev/sda1 isapparently in use by the system; will not make a filesystem here! In general, this is because the disk has been used by the system or mounted to another place. use mount and df-lh to confirm that the disk is

Server RAID disk array information loss is a nightmare for many webmasters or server administrators, if you have ever experienced a similar RAID disk data loss and then look around for data recovery company things, then you must be fresh in memory of RAID disk data recovery, if you've never experienced it, just heard about it, Then you must look down, the reasons

Hard disk partition, there are three kinds, primary partition, extended partition, logical partitionA hard disk primary partition has at least 1, a maximum of 4, and an extended partition can be no more than 1. and the primary partition + extended partition must not exceed 4 total. A logical partition can have several.The extended partition cannot be used directly, it must be used to separate the logical partition, and the logical partition exists in the extended partition. Logical partitions ar

In linux, you can view the raid information of a server. 1. for software raid, you can use cat/proc/mdstat md1: active raid1 sdb3 [1] sda3 [0] 480572352 blocks [2/2] [UU] md3: active raid1 sdb2 [1] sda2 [0] 1952704 blocks [2/2] [UU] md2: active raid1 sda1 [0] sdb1 [1] 194496 blocks [2/2] [UU] I made a soft RAID 1 (sda, sdb two hard disks ). soft

1. Create the corresponding Partition 1 [[email protected] ~] # Fdisk/dev/SDB 2 finally creates multiple partitions for raid as follows: 3 device boot start end blocks ID system 4/dev/sdb1 2048 10485759 5241856 5 Extended 5/dev/sdb5 4096 2101247 1048576 83 Linux 6/dev/sdb6 2103296 4200447 83 Linux 7/ dev/sdb7 4202496 6299647 1048576 83 Linux 8/dev/sdb8 6301696 8398847 1048576 83 Linux 2. Create a raid 1. If

With a new computer, ready to install a dual system, Windows used to play games, Linux to write code. Dedicated to buy two 1T hard drives, want to use to build RAID0, using parallel I/O to improve the performance of the computer. Select the motherboard when selected to support the raid of the motherboard, MSI B85-g43 Gaming, can use MSI super RAID technology, but bought after found that the driver of this

The Linux system does its own raid, regardless of the underlying disk.The Raid,mdadm tool, which incorporates the MD module (Multi disks) in the kernel, can invoke the MD module in the kernel.Mdadm is a command to create a raidfunction mode:-C Create raid-A re-assemble the raid by scanning the

This article mainly organizes Forum content. Forum address: http://bbs.et8.net/bbs/showthread.php? T = 1026112) Many people have encountered that RAID5 is suspended on the server. After a disk is dropped, the second disk is immediately suspended.Reference: RAID 5 also ensures data security based on the data check bit, but it does not store the data check bit on a separate hard disk, but stores the check bit of the Data Segment on each hard disk. In th

Sometimes CentOS Linux kernel does not have a RAID card driver, can only be loaded with floppy disk drive, in fact, there are other methods, as long as the appropriate driver to find the official, the RAID card is now a lot of brands, but most of the independent RAID card for Highpoint,3ware, Adapter,lsi,promise, and some are integrated on the motherboard, if you

In order to meet different data transmission efficiency and security requirements, we have known RAID0, RAID1, RAID2, RAID3, RAID4, RAID5, RAID6, RAID10, RAID50 and other different levels of RAID, the following briefly commonly used RAID0/1/5/10 characteristics and the scope of application. RAID0: RAID0, also known as stripe mode, is to tie multiple disks together and become a large disk. When the data is stored, it presses the data on the disk Numbe

I recently learned how to configure raid in linux as follows:1. Preliminary workChange the system id of the partition to fd.2. raidMdadm-C/dev/md2-l 5-n 3/dev/sdb8/dev/sdb9/dev/sdb10-C is the name specified for creating a raid volume/dev/md2-L the specified raid level is also a raid type.-N: specify several devices (pa

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

[Root@jxq-01 ~]# cd/opt/ [Root@jxq-01 opt]# mkdir-p raid [Root@jxq-01 opt]# dmidecode-s System-product-name PowerEdge R710 #服务器是DELL R710 [Root@jxq-01 opt]# CD Raid/ [Root@jxq-01 raid]# Rz-y RZ waiting to receive. Start Zmodem transmission. Press CTRL + C to cancel. 100% 1551 KB 1551 kb/s 00:00:01 0 Errors 100% 1478 KB 1478 kb/s 00:00:01 0 Errors [Root@

1. RAID definition RAID, full name Redundant array of inexpensive disks, Chinese name is redundant array of inexpensive disks. RAID can be divided into soft raid and hard raid, soft raid is the software to achieve multiple hard d

RAID is an abbreviation for the English Redundant array of independent disks, which is known as a redundant array of independent disks. RAID is a redundant array of multiple hard disks. Although RAID contains multiple hard disks, it appears as a separate, large storage device under the operating system. There are three main benefits of using

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