infiniband hba

One, multi-path650) this.width=650; "src=" Http://s5.51cto.com/wyfs02/M00/79/02/wKioL1aE6J-hnoGrAACJ8icofiE582.png "title=" 2540. PNG "alt=" Wkiol1ae6j-hnograacj8icofie582.png "/>Two, multi-path solution problem:1, prevent host HBA card failure2, prevention of magnetic array controller failure3, can use multiple paths together to improve the IOPS capacity of the magnetic arrayThird, the Linux to multi-path solutionLinux is solved by the following thre

of another host, and the same host HBA card cannot cancel the reservation of another HBA of the same host.2, reservations can not be retained for long. The host reboot will lose the reservation information.3. If the LUN is already reserved, no additional hosts can be reserved. If other hosts want to obtain LUN operation permissions, the LUN must be reset and the reset operation may result in data loss. Res

+ major_idx-8;Default:Bug ();Return 0;/* shut up GCC */}}Find this and finally find out why only 256 files are available. View the kernel documentation/usr/src/Linux/documentation/devices.txt, find the definition section of major for 8, 65-71,136-143, and keep it for SCSI disk. Check the output () in the memory (). About the bolock section of the file/proc/devices. Block devices: 8 SD 65 SD 66 SD 67 SD 68 SD 69 SD 70 SD 71 SD 128 SD 129 SD 130 SD 131 SD 132 SD 133 SD 134 SD 135 SD Check whet

1. WhyHBaseCoprocessor HBase, as a column Family database, is most often criticized. features include: It is difficult to easily create secondary indexes and perform operations such as sum, count, and sort. For example, in the old version (0.92) Hbase, to count the total number of rows in a data table, you need to use the Counter method to execute a MapReduceJob. Although HBa 1. Why HBase Coprocessor HBase, as a column Family database, is most often

1. in the SUSE system, a new storage disk is larger than the size of 5.4T to be migrated, because converting XFS to EXT3 will occupy more storage space than the original one. I am suspended for about 6 TB, the attached storage method depends on the storage brand and type. Let me talk about EMC CX700, that is, first record the WWN of the HBA card, connect the HBA to the storage switch, configure the ZONE, co

module.Column 4th: Content that represents a dependent module, such as Qla2xxx, represents the QLogic FC HBA Fiber HBA card module.Typically, when you use the Lsmod command, you will take a similar lsmod| grep -i ext3 a command to query whether the current system has loaded some modules.typically mates with grep to see if the specified module has been loaded, if not loaded, first confirm whether the module

, it can affect performance.Just as important as memory is the tuning of the disk system, which is especially important for the impact of the ESX server disk system. The disk hosting the ESX server kernel, as well as the kernel image, and the console system files should be equipped with RAID1 protectionWe do not recommend using on-board LSI for raid, 5i 6i 6m cards are recommended because the onboard LSI has a slow CPU, no cache, no battery protection, and therefore is not recommended for use in

protected] document]# ll total dosage A-rw-r--r--.1Root Users -May - Geneva: -All.txt-rw-rw-r--.1Sunjimeng Users0May + A: -B.text3-rw-rw-r--.1Sunjimeng Users0May + A: -C.text6-rw-rw-r--.1Sunjimeng Users0May + A: -D.TEXTDRWXR-xr-x.2Root UsersWuyiMay - Geneva: -Newdir-rw-r--r--.1Root Users theMay - Geneva: -T1.txt-rw-r--r--.1Root Users +May - Geneva: WuT2.txt[[email protected] document]# CD ./[email protected] sunjimeng]# du Document0document/Newdir ADocument4) [[email protected] sunjimeng

Encryption | string using System; Using System.Security; Using System.Security.Cryptography; Using System.Diagnostics; Using System.Web; Using System.Text; Namespace Bigeagle.util { An encryption class Encapsulation of commonly used encryption algorithms public Class cryptography { MD5 encrypt the specified string public static string Encryptmd5string (String a_strvalue) { #if DEBUG Debug.Assert (A_strvalue.trim ()!= "", "empty string", "empty string does not need encryption"); #endif//debug

. This is a typical separate store in a node that does not have networked storage, and in WSFC there is no separate storage share to other nodes. This also makes it unnecessary to replicate the storage during the physical location of the sub-node.Networked Storage (Network Storage): Networked storage can be provided as a resource to multiple computer systems. There is a central repository that makes it easier to manage these hard drives by reducing the number of touchpoints that are running thr

With the rise and development of the concept of cloud computing in recent years, the virtualization technology of various data centers has been paid more and more attention, among them, the server virtualization solution represented by VMware, Citrix and other vendors is undoubtedly the most widely applied architecture as a service (IaaS) cloud computing implementation method in the private cloud field of enterprises. However, with the deepening of server virtualization deployment, IT administra

is not supported, and I/O is interrupted until the 2.6 kernel supports dynamic scanning, however, the kernel does not provide commands to dynamically reconfigure SCSI devices, such as HPUX ioscan. Therefore, the only method is: ◆ restart OS ◆ re-load the HBA driver and use the modprobe ◆ 2.4 kernel configuration/proc tool, for example: # echo "scsi add-single-device 0 1 2 3">/proc/scsi ◆ 2.6 kernel run/sys scan, for example: # cd/sys/class/scsi_host/

. 4. modify data files[S @ ~] Mv/database/pgdata. old[S @ ~] Mkdir/database/pgdata 5. initialize the database[S @ ~] $ Initdb-D/database/pgdata-E UTF8 -- locale = C-U postgres-W 6. Copy the old postgresql. conf and pg_cmd.conf files to the new $ PGDATA file.[S @ ~] $ Cp/database/pgdata. old/postgresql. conf/database/pgdata/postgresql. conf[S @ ~] $ Cp/database/pgdata. old/hba. conf/database/pgdata/hba. conf

network. Therefore, existing mature network management mechanisms can be extended, making it very convenient and easy to build, manage, or maintain. We will build a simple iSCSI-Based ip san, 1. Figure 1 shows a simple ip san structure. In this example, a Gigabit Ethernet switch is used to build a network environment consisting of a non-linear workstation, a file server, a disk array, and a tape library. Figure 1 connect servers and switches using the iSCSI multicast host Bus Adapter and host

I. Basic architecture of Fiber Channel FC-4 Upper Layer Protocol: SCSI, HIPPI, SBCCS, 802.2, ATM, VI, IP The FC-3 common service FC-2 (Framing Protocol/Flow Control) FC-1 Encode/Decode FC-0 Media: Optical or copper, 100 MB/sec to 1.062 GB/sec Description: FC-0: physical layer, customized for different media, transmission distance, signal mechanism standards, also defines the optical fiber and copper interface and cable indicators FC-1: defining encoding and decoding standards FC-2: defines frame

Confirm that the DNS service is working properly Y Y VM Reverse resolution includes servers such as Addc/ddc/pvs to get the correct IP address Confirm AD/DDC/SQL/PVS/VM Time Synchronization Y Y Enable the NTP service to confirm time and time zone consistency Running Windows Update update for Windows virtual machines R Y Http://update.microsoft.com Http://www.xiazaiba.com/html/4041.ht

First zone members are two WWN numbers, one is the HBA card on the server and one is the HBA card on the storage. You specify a vsan when creating a zone. The I/O between sever and storage does not change, regardless of the cable on the switch.The members of the Zonset are zone, and Vsan is also specified.The members of the Vsan are ports, such as FC1/1, FC1/2.The initial time all ports belong to Vsan1, but

, -- compact-listAnd uids commands to limit output toSpecific device.-M | -- vmfs Print mappings for VMFS volumes to theirService Console partitions and vmhba names.-F | -- vfat Print mappings for VFAT volumes to theirService Console partitions and vmhba names.-A | -- hbas Print HBA devices with identifying information-A | -- hba-device-list Print a mapping between HBAs and the devices itProvides paths.-O |

RAID 1 or RAID 10,raid 5 and 50 for data volumes in a single host server architecture pattern with inherent write performance penalties. Therefore, it is generally not recommended to use these levels for virtualized environments.Storage controller Architecture: A storage controller can be a server add card, such as a SCSI or SAS controller, or it can be a component of a mid-tier to a high-end storage array. The storage controller provides an interface between a disk drive and a server or storag

1. Remove the HBA fiber of rac2, interrupt rac2 and storage cabinet, and find that rac2 reboot and Rac1 work normally. [Oracle @ racdb01 ~] $ Crs_stat-TOra. RAC. DB application online racdb01Ora... s1.inst application online racdb01Ora... s2.inst application online offlineOra... sm1.asm application online racdb01Ora... 01. lsnr application online racdb01Ora... b01.gsd application online racdb01Ora... b01.ons application online racdb01Ora... b01.vip ap