synology nas raid

Source: Watchstor.com anonymous name I want to comment (0) Abstract: RAID 0 + 1 is a combination of data block segments and disk images. When RAID 0 + 1 appears, the segmentation technology of the Oracle layer is eliminated, because the segments of RAID 0 + 1 are at the data block layer, and the table block allocation method is as follows: each data block on a

CentOS6.5 create soft RAIDWhat is RAID? RAID, Redundant Array of Independent Disks, formerly known as Redundant Array of Inexpensive Disks, is short for hard disk arrays. The basic idea is to combine multiple relatively inexpensive hard disks into a hard disk array group, so that the performance can reach or even exceed a hard disk with a high price and huge capacity. Depending on the selected version,

For an NT-core operating system such as Windows 2000/XP, the installation of Plug and Play hardware can be scheduled to occur after the system is installed (that is, the system is installed into the GUI-mode stage), but the driver installation for SCSI and RAID cards may be different. If you need to install the operating system on a RAID or SCSI hard drive, their drivers must be properly loaded before the s

Disk management-RAID 5 What is RAID 5raid Level 5 is a storage solution that combines storage performance, data security, and storage costs. It uses the Disk Striping technology. RAID 5 requires at least three hard disks. Instead of backing up the stored data, RAID 5 stores the data and the corresponding parity informa

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: The DAS (direct Attach STorage) storage device is connected directly to the server with an interface of IDE or SCSI. NAS (Network attached Storage) network-attached storage, which uses networking technology to conn

The article itself I do not make too many changes, here I put myself in the installation of the difficulties encountered with everyone to mention.1. Where to download?First of all, according to the path in the article has not been downloaded to the corresponding file, here we go to Http://www.lsi.com's website to search, try a variety of combinationsFinally with Linux_cli.zip in the search bar search for the corresponding results, find the Linux version, download can.I also uploaded the file to

1 How does the process access files on the hard disk? The process initiates a system call (the process runs on the CPU) and the kernel issues instructions to control the memory load file (the kernel is running on the CPU) -the process reads the file from memory (the process runs on the CPU) Only one process can run on the CPU (single core), so this process involves processes and cores using CPU resources in turn.2 What is a driver? Converts the control instruction of the CPU into an operation

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. fault description of RAID data recovery Fault descriptionThe total storage space of hp fc msa2000 is composed of eight 450 gb sas hard disks, of which seven are a RAID 5 array, and the remaining one is used as a hot backup disk. Two hard disks are damaged in the RAID 5 array, and only one hot spare disk is activated successfully. As a result, the

Brief introductionRAID is a noun that we can often see. But because rarely can experience in the actual environment, so it is difficult to have a very clear understanding and grasp of its principle. This article will introduce and summarize the raid technology in order to clarify its concept as much as possible.RAID is all called Redundant Array of independent disks (redundant array of independent Disks), the basic idea is to combine a number of relat

Detailed steps for quick installation of Soft RAID on Linux Physical Environment: Virtual Machine CentOS6.4Configuration: 8 GB memory, 2x2 core cpu, 3 virtual hard disks (sda, sdb, sdc, sdb, and sdc are identical) in the actual production environment, system hard disks are separated from databases and applications, which is conducive to system maintenance and data application usage. In this environment, sda is used as the system disk, and sdb + sdc is

Common hard drives: SATA General pc mainstream HDD. SCSI general servers are widely used. The IDE is older and both are available. RAID it means redundant array of inexpensive disks. is a collection of disks that are placed together to become a logical volume. Software RAID and hardware RAIDSoftware RAID performance is low, use host resources, load

Sometimes you want to know that there are a few disks on the server, if you do not do raid, you can simply use the fdisk-l can be seen.But I did raid, so I couldn't see it. So how do I check the raid on the server?Software RAID: can only be viewed by the Linux system itself 　 Cat/proc/mdstat 　 You can see information s

Disk Management is important for an OPS engineer. How to manage the data, you can not do without raid.Content:1. Common Types of RAID: RAID0 (Strip)650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/4C/2D/wKioL1Q3uY-j5MMgAACbfrJJtok640.jpg "title=" 1.PNG " alt= "Wkiol1q3uy-j5mmgaacbfrjjtok640.jpg"/> RAID1 (Mirror)650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M01/4C/2D/wKioL1Q3ufyiOkzaAACQkt6mi1k438.jpg "title=" 2.PNG " alt= "Wki