hba cloth

entry:Options qla2xxx ql2xfailover = 0 configrequired = 0Try applying the following procedure: DeleteHostidfile.txtAnd restart the Manager Host agent. Reboot the host. Restart management server on the array. (in a browserSp_ip/setup => restart Mgmt Server.) If above fails, follow these steps: Manually register the host in manager withGroup EditButton inConnectivity status. Add host and Luns to

activated at the same time per disk . For example, in your configuration, each LUN has 4 disks, and if your queue depth is defined as 16, then the maximum number of I/Os that the entire system has at the same time is 64 (4 disks * 16 maximum I/O values per disk);The queue depth is the number of commands in the command queue that are hosted on a single device.The queue depth is the larger the number represents, the more tasks you want to process, the more concurrentHBA Queue Depth refers to the

to that found and listed.650) this.width=650; "src=" Http://s5.51cto.com/wyfs02/M02/7F/2D/wKiom1cVz8PAFGwdAAA5ZrkzNaQ506.png "title=" 2016-04-19_142624.png "alt=" Wkiom1cvz8pafgwdaaa5zrkznaq506.png "/>So here, download the corresponding driver disk and install the problem on the XenServer server.Driver Disk for Broadcom tg3 3.137f-for XenServer 6.5.0http://support.citrix.com/article/CTX201909Follow-up monitoring for several months, no more similar problems occur.Summary: For XenServer, his kern

devices re-scan... Delete LUN not mapped or mapping changed... Scan qla2 HBA host/sys/class/scsi_host/host4... No new device found Scan qla2 HBA host/sys/class/scsi_host/host3... No new device found Scan mptsas HBA host/sys/class/scsi_host/host2... No new device found Run/usr/sbin/upadm start busscan... Scan mpp virtual host/sys/class/scsi_host/host5... No new v

twisted pair wires and interfaces connected to coaxial cables. However, these interfaces are rarely used. (2) FC Nic: It is also called a fiber Nic. it is also known as a fiber Channel HBA (Hose Bus Adapter: host Bus Adapter ). The transmission protocol is an optical fiber channel protocol, which is generally connected to an optical fiber channel switch through an optical fiber cable. Interfaces can be divided into optical ports and electrical ports.

{devnode "*" Different vendor configurations are not the same} uncomment default{Udev_dir ... path_grouping_policy failover (judging execution policy based on failure domain)} #chkconfig multipathd on #servic E multipathd Restart after generating the device location under/dev/mpath/, can make file system, Mount #multipath –l query device status11.FC Storage Storage Set up a RAID device, RAID establishes a mapping relationship with the HBA card WWN nu

Multipath implements LUN device name persistence. I. Additional knowledge based on different transmission protocols, the network card can be divided into three types: an Ethernet card, an FC network card, and an iSCSI network card. (1) Ethernet Adapter: an Ethernet Adapter. The transmission protocol is an IP protocol. It is generally connected to an Ethernet switch through an optical fiber cable or twisted pair. Interfaces can be divided into optical ports and electrical ports. Optical interface

Shared Sureha cluster disk filtering information loss can cause group resource startup to fail, and all servers within the cluster have access to the shared disk when the problem occurs. If no NP resources are set, the Admin page has the following error: If the NP resource is set, the admin page complains as follows: Solution: In set mode, select the first server and right-click the select attribute, as shown in the following figure: In the

=noprobe resume=/dev/sda1 splash=silent showopts Init =/sbin/suloginInitrd/initrd-2.6.16.60-0.21-smpTitle Linux with UltrapathSerial=1,9600n8Root (hd0,8)KERNEL/VMLINUZ-2.6.16.60-0.21-SMP root=/dev/sda2 [email protected] console=ttys0,9600 console=tty0 hde=noprobe hdg= Noprobe Auto resume=/dev/sda1 splash=silent showopts elevator=noopInitrd/mpp-2.6.16.60-0.21-smp.imgDescription: The corresponding parameter after default indicates that the starting item is started from the first few startup items,

under the same directory as/usr/local/pgsql/data/base (environment variable pgdata specifies The base directory of the path). If the database name parameter is omitted, the user name is automatically used as the database name. For example, a database named DB1 will be saved in the/USR/LOCAL/PGSQL/DATA/BASE/DB1 directory. You can also use the initlocation command to specify a different location: $ initlocation/pgsql/data $ Export Pgdata2=/pgsql/data $ createdb-d PGDATA2 DB2 The database DB2 wil

be saved in the/USR/LOCAL/PGSQL/DATA/BASE/DB1 directory. You can also use the initlocation command to specify a different location: $ initlocation/pgsql/data $ Export Pgdata2=/pgsql/data $ createdb-d PGDATA2 DB2 The database DB2 will be saved in the/pgsql/data directory. In addition, PostgreSQL version 6.4 can specify the text encoding when establishing the database: createdb-e "character encoding" "character encoding" see Configure, Initdb. Delete database: Destroydb database name PostgreSQL

Recently wrote a driver to virtual a file into SCSI DISK. The driver is essentially an HBA driver. When driving performance testing, it is found that IO performance is very low, only achieves 4mb/s throughput when a large amount of data is written, and has high performance when writing a small amount of data. The drive IO model is shown in the following illustration: A print analysis of the Queuecommand process in the driver found that the SCSI mid

unix| Backup SCO installation and backup of the tape drive under UNIX (i) Use tape drive to back up data for work reasons. In the implementation process summed up a number of experience for your reference. The server is IBM PC Server 250 (Dual-machine + array cabinet), the operating system is SCO UnixWare 7.1.1, because it is the financial system, also installed a dual-computer software GDS, SYBASE11.9.4 and financial system applications are installed on the disk array, there are now two appli

, abstract components do not rely on specific implementation components, Extensions that have been completed may not need to be changed, and if there are additional requirements only need to add new functional interfaces, the high-level components do not need to change too much. Abstract Factory modeAbstract Factory mode provides an interface for creating an object family without specifying a specific class. The factory method only involves the creation of an object, sometimes we need a family o

sending messages over TCP/IP or in-process. In this way, you can send messages from the server to the client through Peer-to-peer, one-way, asynchronous, and so on. Below, we will briefly describe some of the main features of WSE 2.0 and assume that you are familiar with WSE 1.0. For more information about WSE 1.0, see Programming with WEB Services Enhancements 1.0 for Microsoft. NET (English). Rock Paper Scissors: A secure, Distributed message processing sample application To showcase all aspe

tools to create storage volumes and allocate addresses or SCSI Luns. If some entities do not have Luns, The LUN mask hides the LUN. The LUN binding only associates the LUN with the global ID of the HBA in the server. When the LUN mask and binding are completed, storage experts should go deep into the vswitch, create a region, and only allow dedicated adapters to communicate with specific storage ports. "In fact, the vswitch can enhance the LUN mask a

Initrd/initrd-2.6.16.60-0.21-smp ### Don't change this comment-YaST2 identifier: Original name: local rescue ### Title LOCAL RESCUE Root (hd0, 8) Kernel/vmlinuz-2.6.16.60-0.21-smp root =/dev/sda2 hde = noprobe hdg = noprobe resume =/dev/sda1 splash = silent showopts init =/sbin/sulogin Initrd/initrd-2.6.16.60-0.21-smp Title Linux with UltraPath Serial = 1, 9600n8 Root (hd0, 8) Kernel/vmlinuz-2.6.16.60-0.21-smp root =/dev/sda2 crashkernel = 64M @ 16 M console = ttyS0, 9600 console = tty0 hde =

, many small and medium enterprises prefer to use iSCSI storage for cost effectiveness.It is very important to distinguish between SCSI devices and FC Optical Fiber devices. FC Optical Fiber devices simulate the abstract devices of one or more SCSI devices at the bottom layer of storage virtualization, and do not have real SCSI devices, it is simulated through the SCSI protocol.GNBD (Global Network Block Device) Global Network Block devices are similar to iSCSI storage architecture, but data tra

technology, no MPIO. HBA is a hardware physical block used to connect disk drives and other storage devices. The HBA manufacturer creates a micro-port driver connected to STORPORT. SYS. Most HBA drivers report communication errors to Application Event Logs. Ideally, the entire chain of this event takes no more than 20 milliseconds. Performance is affected by mul

Directory Definition UML Participants Example Definition: The Singleton Mode means that there is only one instance. The Singleton mode ensures that a class has only one instance, and the instance is self-instantiated and provided to the entire system. This class is called a singleton class. Application: Each computer can have several printers, but only one printer spooler can be used to prevent two print jobs from being output to the printer at the same time. Each