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Linux adds a new LUN without rebooting

Linux adds a new LUN without rebootingWhen adding a new LUN to the store, it is generally under Linux:A. Restart the operating systemB. Restart the HBA card driver1. KudzuAfter adding the new hard drive, run the command kudzu to rescan the new hardware device, similar to Aix's cfgmgreg[[Email protected]]# kudzu-p | More-Class:otherBus:pcidetached:0Driver:shpchpDesc: "VMware PCI Express Root Port"Vendorid:15adDeviceid:07a0subvendorid:0000subdeviceid:00

Fibre Channel (Fibre Channel) protocol

First, the basic architecture of Fibre Channel FC-4 Upper Layer Protocol:scsi,hippi,sbccs,802.2,atm,vi,ip FC-3 Common Service FC-2 Framing Protocol/flow Control FC-1 Encode/decode FC-0 media:optical or Copper,100mb/sec to 1.062gb/sec Describe: FC-0: Physical layer, customized to different media, transmission distance, signal mechanism standards, also defined fiber and copper interface and electrical Cable Index FC-1: Defining standards for encoding and decoding FC-2: Defines frame, flo

Hyper-V Server virtual Fibre Channel

The Hyper-V virtual Fibre Channel feature for virtual machines enables virtual machines to access Fibre Channel-based storage devices. This feature enables enterprises to virtualize workloads that require Fibre Channel usage, and enables enterprises to create clusters using Fibre Channel with guest operating systems running in virtual machines.The Virtual Fibre Channel adapter provides port virtualization capabilities by providing a host bus adapter (HBA

Install Sybase for Unixware

1. Install CDROM in Unixware 7.1.1) 1. boot from the CDROM Installation Boot Unixware CD-1CDROM must be a Slot1 or Slot2 Master)2. installation language. Select Proceed with installation in English and press enter to continue.3. Choose a zone for this system and press , Select Americas (Latin-1), F10 continue 4. Choose a Locale for this system and press , Select C (English), F10 to continue 5. Keyboard, select United States, and F10 to continue 6. Enter the License Number, Li

Low season of fabrics is the peak season of clothing

following varieties sold well in June: shredded acetate cloth: According to the person in charge of lanxiang textile, the fabric has varieties such as plain, twill, and satin, in the Air-jet Loom with a multi-arm machine, the production process of the acetate cloth must be shut down several times. The first is to keep the tension between the wires uniform during the whole process, and the wire feed speed s

Linux system SCSI disk scanning mechanism analysis and command details

Introduced How many ways do Linux systems scan SCSI disks? After Linux has added LUNs, can you recognize the device without restarting the host? If PowerPath is installed, what is the command to add/Remove LUNs dynamically? This article summarizes the way Linux hosts reconfigure disk devices and attaches command instances. More information The Linux system provides multiple mechanisms to rescan the SCSI bus and recognize the SCSI devices that are joined in the system. In the 2.4 kernel scenar

Factory model trilogy _ simple factory Model

class: defines a common method getcloth () to obtain the corresponding clothes.1 // abstract product: Get clothes 2 public abstract class cloth 3 { 4 public abstract void getcloth (); 5} Specific product categories: three specific products are defined: business, casual, and sportswear. They all inherit from the abstract product categories and override the abstract methods in the abstract product categories.1 // Product 1: Commercial Installation 2 c

[Virtualization practice] storage design 6 latency

the physical hardware, HbA, and storage device. In milliseconds. Generally 20-30 ms is acceptable. Kavg/CMD (Kernel average latency) Average time required for processing each request through the vmkernel layer. It is generally 0. If it exceeds 2 ms, the performance may be affected. Qavg (Queue average latency) Average time required for each request to pass through the vsphere storage stack. When the queue is very long,

Specific practices for EMC storage configuration on HPUX

Specific practices for EMC storage configuration on HPUX EMC CX installation in HP-UX OS Environment 1.hp-ux 11i 2.EMC HP Tachyon HBA card recommended 3. If you use PowerPath 3.x, you need to install patches; Refer to EMC matrix for download from HP Websit 4. We recommend using EMC to provide PowerPath Installation 1, determine the Tachyon HBA card driver, the first need to properly installed on the P

Network attached storage (iSCSI)

Instructor: Instructor Zeng Yong of Double Star Technology I. Working Principles of iSCSI 1.1. Composition of iSCSIA simple iSCSI system consists of the following parts:ISCSI initiator or iSCSI HbAIscsi targetEthernet SwitchOne or more servers 1.2 iSCSI initiator ISCSI initiator is a computing software or hardware device. It is responsible for communicating with iSCSI storage devices. There are two connection methods between the iSCSI server and the iSCSI storage device:The first software-based

Java object-oriented thinking to solve scissors problem

The first object-oriented program:One console scissors mini-game:The first step is to select the role;The second part chooses the scissors, the stone, the cloth, and the computer carries on the PK;The third choice to continue or choose to end;The end shows the number of innings, and the points earned by each game;Design ideasAnalyze the problem and design four classes1. Design of person,computer,game three classes;2. Design the test class start progra

Factory pattern)

factory class to achieve the goal of "a new set of objects" II. General mode (no factory Mode) To open a store to sell clothes, we first need the colthesstore class to receive the order and return the prepared clothes. The clothesstore class must depend on the clothes class. After all, the specific object to be operated is clothes, in clothesstore, there is also a process for making clothes (making, processing, and decorating ..) Then our clothesstore will be like this: Package factorypattern;/

Performance impact of the SCSI software layer

implements a block device function. To the upper access block device driver layer, the bottom and the SCSI middle layer docking. 2, SCSI middle layer. The middle-tier software mainly completes the scsi command handling, error handling, timeout processing, etc. Above the middle layer are the various scsi function driven; here's the scsi the bottom drive. 3, SCSI The underlying driver. The underlying driver enables SCSI data transfer and HBA

EMC Storage Management

following can give the LUN name;Set number of LUNs to create multiple LUNs at the same time. Click Advanced to assign the default owner to an SP, it is recommended to distribute the average to spa and SPB, and if you create multiple LUNs at the same time, you can select Auto, and the storage will be automatically distributed evenly.Click YesClick OK. Follow this method to complete the creation of the remaining LUNs. After you are done, you can view the created LUNs, select the LUN you created,

VMware ESXI6.0 Upgrade 6.5 issue

upgrade process, when one of the servers (Dell R820) was successfully upgraded, it was found that the HBA card was not found (HBA card lights are not lit) and the boot process was not error-free. Contact Dell Engineer, login to host SSH, and see the HBA card via LSPCI. Preliminary judgment is the driving problem.650) this.width=650; "src=" Http://s2.51cto.com/wy

Object-oriented _ Scissors game

A scissors game is implemented through console commands, which the user enters (1. Scissors, 2. Stone, 3. Cloth) and computer PK, finally through the number of points to determine the outcomeScissors Game Implementation Ideas:1, in the console output gameplay tips2, whether to start the game (receive 1 to start, 0 for exit)3. Number of games received4, the loop receives the user's fist (1. Scissors 2 stone 3. Clot

Novodex2.6.2 fabric System

I tried novodex2.6.2's fabric system. It feels pretty good,Simple and easy to use, powerful functions, and good speed,The fabric system can be used not only to simulate the fabric, but also to describe the hair and many variability objects, such as the surface of an empty gas barrel. The company is planning to use this to make hair. I don't want to talk about it anymore. The following is a summary: the figures and demos are too lazy to release. I am so sorry to come up with them. Novodex

"Oracle Cluster" Oracle DATABASE 11G RAC detailed tutorial on RAC special issues and practical experience (V)

other high-speed network (such as IB), it is very fastidious, of course, and take the serial line to achieve heartbeat information transmission. In addition, what network parameters are used to the overall performance and robustness of the cluster have a great relationship.Case:XX City, 4 node Oracle 10g RACThe operating system uses RHEL 4, according to the default installation documentation, set the network parameters to the following values:Net.core.rmem_default = 262144Net.core.rmem_max = 26

Hand Sewing stitch Daquan-Sewing Clothing stitch (graphic explanation, transferred from the Chinese clothing Production study bar)

First, hand needle sewing stitch(1) Quilted needle (needle)It is one of the basic stitches of Chinese traditional hand-needle technology, which has the points of long and short quilting needles.Long quilted needle for two or more booke temporary fixation, such as the needle when the line does not knot, from right to left, to 3 centimeters long (according to need) needle distance delivery needle. There are many changes in the length of the quilted needle, such as the front length, the opposite si

Retrofit example of cooling tower in a fire power plant

A) sewage cooling tower Renovation Project Overview:The steam turbine Workshop of a thermal power plant has 2 counter-current FRP 800 tons of sewage cooling tower, which has been running for 10 years continuously since its completion. Due to the influence of production environment, the cooling water has high alkali content and poor water quality, and it is aging with long-term use of the equipment. Causes its rotating water-type cloth to appear the bl

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