iscsi multipath

1 Introduction SAN is a private network and the backend of a network server group. It can be connected to a high-speed private network using storage protocols such as fiber channel or iSCSI, so that network servers can be directly connected to multiple storage devices. SAN can achieve many-to-many connections between network servers and storage devices. In addition, this connection is a local high-speed connection. The advantages of the SAN architectu

Software:Microsoft ISCSI Software Target 3.3After download, unpack the package as follows:Install the official description of the target end is the server only support Windows Server R2, Windows Server R2 SP1 operating system.The installation steps are the next step and the next method.To configure the destination end (target)To set up authentication:============= Client Settings ============The first run will have the following tips:Providing storage

Iscsi provides security settings. iSCSI has good advantages in security management. You can use "host" and "user" to allow or reject access settings. After the installation is complete, the following example will be generated by default: "Only 172.16.7.120 this initiator is allowed" and "reject all" Settings /Etc/initiators. allow content, the last line allows 172.16.7.120 (the other three lines are # A

, what the company needs to do is stabilize the existing architecture, or look long and deploy new technology. Citrix and DataCore Solutions Radford knows what Washington archives needs: An IT architecture with replication, redundancy, disaster recovery, and good flexibility, and its costs to be within acceptable limits. As a partner for Citrix and DataCore, Moose Logic knows how to design and deploy a reliable, scalable, high-performance business solution. "We get a shared storage environme

You need to modify the corresponding values according to your environment.Cattestiscsi.sh#!/bin/bashworkd= '/home/vdbench050406 ' sdnum=1hdnum=1threadnum=8seekpct=100rdpct= 70xfersize=8kiorate=maxelapse=68400maxdata=1000ginterval=5name=multihost-${xfersize}-${seekpct}.fileecho "Hd=default,vdbench=${workd},user=root,shell=ssh" >>${name}echo "hd=hd1,system=" >>${name}echo "hd=hd2,system=" >>${name} #echo "hd=hd3,system=" >>${name} #echo "hd=hd4,system=" >>${name} #echo "hd=hd5,system=" >>${nam

theory that can be used is less than the actual one.LUNsYou can also connect multiple logical devices (such as disks, volume groups, and so on) under each SCSI target device (target), so that each logical device has a LUN (Logical Unit number) to identify itself, in order for the system to differentiate between each logical device. Each SCSI ID has a maximum of 32 LUNs, which starts from 0 by default (although 0 is occupied), and each LUN corresponds to a logical device.SCSI Communication Model

I. Server installation: [[Email protected] cd] # rpm-IVH scsi-target-utils-1.0.24-10.el6.x86_64.rpm Warning: scsi-target-utils-1.0.24-10.el6.x86_64.rpm: Header V3 RSA/sha1 signature, key ID c105b9de: nokey Error: Failed dependencies: Libibverbs. so.1 () (64bit) is needed by scsi-target-utils-1.0.24-10.el6.x86_64 Libibverbs. so.1 (ibverbs_1.0) (64bit) is needed by scsi-target-utils-1.0.24-10.el6.x86_64 Libibverbs. so.1 (ibverbs_1.1) (64bit) is needed by scsi-target-utils-1.0.24-10.el6.x86_64 Libr

Under the build tab of the project, double-click default, select C/C ++ compiler, and change tool to the path of the executable file of the cross compiler to be used, for example, if my cross compiler is placed in C:/tornado/target/config/rtems-4.8-mingw/bin/iSCSI-RTEMS-GCC, the tool is changed to the preceding directory, and the assembler and the linker can be modified in the same way. For compilation options, if you want to support // annotation, y

The services you see in the service start and do not start,and confirm it in the console.As shown in the following:650) this.width=650; "title=" Openfiler-2015-08-01-21-27-29.png "src=" http://s3.51cto.com/wyfs02/M01/70/BF/ Wkiol1w8y5wabj9kaaio6r2zm38660.jpg "alt=" Wkiol1w8y5wabj9kaaio6r2zm38660.jpg "/>This article is from the "halfway It People" blog, so be sure to keep this source http://ccie23951.blog.51cto.com/829845/1680874Unable to add target IQN workaround when creating an

Failure phenomenon: 1, on the Vnxe, can not use 192.168.2.2 this IP address to create a shared folder server or iSCSI server; 2, the use of 192.168.2.2 this IP address to create a server failed, and reported "IP address has been used (error code: 0X600089C)" error message. Solution: 192.168.2.2 This IP address is occupied by the data mover of the Vnxe two storage processor (SP). You can log in to the Vnxe command-line interface by putty using the

Scenario: Resolve a lookup in a large amount of data on the hard disk. Because a large amount of data is stored in the hard disk, can not be loaded into memory all at once, and each time a data read the hard disk, reading speed is too slow, it is

One, what is MultipathThe normal computer host is a hard disk attached to a bus, here is a one-to-one relationship. In the case of a SAN environment with optical fiber, or an ipsan environment made up of iSCSI, the host and storage are connected by a fibre switch or multiple network cards and IP, which makes the relationship much more numerous. In other words, host-to-storage can have multiple paths to choose from. The IO between host-to-storage is se

Test the vulnerability program vul. c # include # include void func (char * str) {char buf [8]; strcpy (buf, str); printf ("% s \ r \ n", buf );} int main (int argc, char * argv []) {if (argc> 1) func (argv [1]); return 0 ;}with the suid bit, the

Today, when reviewing the knowledge about the Linux system architecture, I found that I was a little confused about the overflow and underflow code of the register window. I would like to record it, for more information about the structure of the

I. Overview SCSI was originally an I/O technology designed specifically for small computer systems. However, due to its architecture and Protocol advantages, SCSI was widely used in the implementation of the underlying technologies of DAS and

Tags: Linux under multi-path useFirst, the application of the environment and demand Operating system is red Hat 6.5 64-bit Mount storage capacity is 2.5T Based on this application environment, there are two issues that need to be addressed: In order to ensure the stability and transmission performance of the link, multi-path technology can be used. Mount storage hard drive exceeds 2T,MBR partition format cannot be supported, need to use to GPT partition format

identify the mounted storage hard disk. Otherwise, you needFirst install the storage driver.2. what is multi-path? From: http://rootking.blog.51cto.com/2619611/476212 A common computer host is attached to a bus by a hard disk. this is a one-to-one relationship. In a SAN environment composed of optical fibers or an IPSAN environment composed of iSCSI, the host and storage are connected through an optical fiber switch or multiple network adapters an

.jpg "width=" 773 "height=" 295 "/> 1. IP san and FC San based As a typical two-node cluster-attached storage for high-availability scenarios, you can see that there is no essential difference between an IP san and an FC San in a network topology, both of which can achieve IO high reliability and load balancing through Multipath IO (MPIO). The storage server here is the traditional storage server (storage array with CPU and controller) that provides s

:3260 --loginTo configure the Multipath multipath problem: 单网卡连接之间的网络存储设备的共享不可靠，容易由于非人为破坏导致共享断开，由而引发设置多网卡，然后让多网卡对相同设备进行连接，然而，多网卡之间连接相同的共享设备时，相同设备不同连接不可以进行相互冗余，致使连接无意义Objective:使多张网卡之间的连接相同的共享设备时可以形成相互冗余、备份，高可用Get ready:添加网卡eth1client50：192.168.2.50storage51：192.168.2.51Log out of iSCSI devices and log in using the devices below ]# iscsiadm --mode discoverydb

standalone hosts that are not shared storage. But to achieve high availability, we typically deploy a hyper-V server failover cluster, which requires the cluster nodes to have shared storage, so we have two options for shared storage: San-based (iSCSI-based IP SAN and FC Channel-based FC SAN) and a file server cluster-based Hyper-V over SMB. 1. IP san and FC San based As a typical two-node cluster-attached storage for high-availability scenarios, yo