emc hba

connection pool to maintain the web site. Therefore, as more connections are blocked, the Web site creates more connections, and these connections are blocked, this cycle will continue. The log write operation will be completed in about 45 seconds, but hundreds of connections have accumulated so far, leading to blocking problems, it takes several minutes for SQL Server and applications to be restored. When combined with Application Problems, latency I/O conditions will have a very negative impa

When a PC server host connects to FC storage, it is generally necessary to install an HBA card, and an important parameter of the interface is the WWN number. The way to view the WWN number under Redhat or SuSE is as follows. One, SuSE Linux 9 View the/proc/scsi/qla2xxx/* and filter the WWN information for the FC HBA card with the Adapter-port keyword: # cat/proc/scsi/qla2xxx/* | grep adapter-port scsi-qla

Article title: Sun announces the open-source Key Management Protocol. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. Sun recently announced that it will open source its key management technology. The unified communication protocol between the key manager and the encryption device is a major goal of Sun's recent Open Storage initiative project. at the same ti

ArticleDirectory System Environment Fault Cause Solution Practical drills System Environment Centos 5.3 64bit GCC 4.1 EMC 2.2 Operation Purpose Compile the EMC module into. So from externalProgramCall Fault During compilation, GCC indicates that libsystemc. A needs to be compiled using the-FPIC switch, and the module cannot find the symbol.

The Vnxe section (emc.com/vnxesupport) of the EMC Online Support website provides software update files. You can also access this page by Unisphere using one of the following methods: Click Support-> Need more help? -> Product Support Page. Click Settings-> more Configuration-> Update Software-> obtain Version Online. When a software update is available, alerts appear in the user interface in Unisphere. Go to the

With the release of Vnx's new version of block R5.32 and file V7.1, more and more users in the marketplace are focusing on this version. But many users do not know what the new version of Vnx is all about. Therefore, professional and technical consultants will face more and more problems in this area, in order to professional and technical advisers more comprehensive and systematic answer to the relevant questions, the series will be "high efficiency", "ease of use" and "effectiveness" of the th

1. Environmental Hardware InformationMachine as Target end (PC)HBA Card: QLogicWwn1:21:00:00:1b:32:81:6e:f1System: Ubuntu 15.04 ServerMachine as initiator end (PC server)System: XenServerHba:qlogicwwn1:21:00:00:1b:32:98:7d:1bFC Switch: Brocade 200E2. Switch configuration1) View the WWWN number corresponding to the switch portSwd77:admin> SwitchshowSwitchname:swd77switchtype:34.0Switchstate:onlineSwitchmode:nativeSwitchrole:principalSwitchdomain:1Switc

Some knowledge about storageAccording to the different transmission protocols, the network card can be divided into three kinds, one is the Ethernet card, the second is the FC network card, the third is the iSCSI network card. Ethernet Card: The Scientific name Ethernet Adapter, the transmission protocol for the IP protocol, generally via fiber optic cable or twisted pair with Ethernet switch connection. The interface types are divided into optical and electrical ports. Optical ports ar

way, in order to ensure effectiveness, Shielding must be electronic end-to-end continuous and grounded correctly. It is also important to select an end-to-end solution when selecting a shielded cabling system. Using Hybrid components of different systems may cause problems due to impedance mismatch.Shielding system costs, including additional installation required, typically 20-30% higher than equivalent UTP solutions.Standards and rulesEMI or RF interference (RFI) refers to any unwanted signal

) Auto Media management A property for both the device and the Autochanger configuration resource. When Auto media management is enabled, Networker automatically recycles and labels the volume when appropriate. Avamar EMC Avamar is a deduplication backup software and system solution. It can be used as a standalone backup application, but it can also be integrated into the Networker environment as a deduplication

VVNX Professional Storage Device VirtualizationAt the World Congress, EMC announced the Project Liberty Program, which focuses on hardware and software decoupling and virtualization deployment of professional storage devices. Currently, EMC has released the VVNX virtualization Community version and provided free download links. VVNX is a virtualization-based, industry-leading VNX Array (VVNX) that enables u

nominal according to the impedance generated at a certain frequency, the impedance unit is also ohm. generally, 100mhz is used as the standard. For example, 2012b601 indicates that the impedance of the magnetic beads is 600 ohm at 100mhz.Rated current: The rated current is used to ensure that the circuit works normally. 3 difference between inductance and magnetic beads:More than one turn of the coil is used to be called the Inductance Coil, less than one turn (wire through the magnetic ring) t

virtualization has a heterogeneous premise, that is, some people's view is that there are three companies participating in the same time to make storage virtualization effective." All I have to say is, forget about this kind of talk. Even if you insist on signing with only one supplier, there is no problem. ” Compared to other it areas, the storage market is more proprietary, says Taneja. This leads to problems if you just love a storage vendor. For example, if you are an

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 computer may have several HbA cards, but only one software should be responsible for managing the HBA card to avoid the situation where two fax jobs are simultaneously transferred to the HBA card. Each

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

{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