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LSI SAS1068 RAID Array card graphics and text configuration tutorial _ server Other

1. Install all SAS hard drive, boot up 2, the post process appears Ctrl + C prompts, press CTRL + C into LSI Logic Config Utility ... Start SAS configuration 3, select the "SAS 1068" channel, press. 4, RAID select "Raid Properties", press RAID Properties: Creating, managing arraysSAS topology: View Physical disk and RAID configuration informationAdvanc

What are the performance metrics for the hard drive?

transmission instruction (not only the data) to examine, if discovers the error will automatically correct, this greatly enhances the data transmission reliability. The serial interface also has the advantages of simple structure and hot-swappable support. SATA2 Seagate joins the NCQ Local command array technology based on SATA and increases the disk speed. SCSI is known as the small Computer system Interface (minicomputer systems Interface), after many generations of development, from early

How to Mask Ctrl+alt+del, ALT + TAB, and Ctrl+esc key sequences in Windows XP systems

Wlxdisplaysasnotice Winlogon calls this function when no user is logged in Wlxdisplaystatusmessage Winlogon Call this function to display with a state information Wlxgetconsoleswitchcredentials Winlogon calls this function to read the trust information of the currently logged in user and transparently upload them to the target session Wlxgetstatusmessage Winlogon call this function to get the current state information W

Software function Comparison of nine large data warehouse development

What are the data warehousing solution software available for selection in the market? What difference does it have? Can you analyze and compare their performance and characteristics? Powerful companies such as IBM, Oracle, Sybase, CA, NCR, Informix, Microsoft, and SAS have launched their own data warehousing solutions (through acquisitions or research and development). Professional software companies such as Bo and Brio also have a place in the fron

Linux disk knowledge, RAID,LVM

Tags: RAID LVM disk partition partitioning tool file systemfirst, disk basic knowledge1, disk and hard disk are all the unified address of the disk storage system. When the disk is working, the head is suspended in a radial motion above the disk platter, without touching each other.2. Purchase Disk:(1) Spindle speed speed fast (r/min), 5400/7200/10000/15000;(2) interface type:sata/sas/scsi/ide; SAS usage in

2U dual-rack, cheaper Dell PE2950, only 9500

Dell PE2950 adopts a modular design to facilitate upgrade management and maintenance and flexible configuration. Users can customize procurement as needed. Its rich management functions provide convenience for small and medium-sized enterprises with insufficient IT experience. At present, a Dell PE2950 with a single intel quad-core Xeon 5405 processor is priced at only 9500 yuan, and a keyboard and mouse are given away, which is very cost-effective. Dell PowerEdge 1, 2950 The Dell PE 2950 proce

MongoDB server selection and basic optimization reference

I haven't posted any articles for a long time! Hard Disk Selection 1. If the hard disk has conditions, try to select a SAS disk. If there is no bad money, you can choose SSD, funsion-io, and so on. You can also consider SATA based on the selected application environment. I haven't posted any articles for a long time! Hard Disk Selection 1. If the hard disk has conditions, try to select a SAS disk. If there

Build a website that can withstand 5 million pv/a day

, configuration is very common configuration, such as a 4-core cpu+4g memory + server SAS hard disk . 2, the individual arbitrary think in the server CPU domain Intel CPU is superior to AMD CPU, there are objections to it, I said I was arbitrary (see CPU performance comparison ), do not believe too much of AMD ads, compare CPU performance simple way is more than the price, Do not compare the frequency with the core number, the price difference is not

SQL Server Performance Tuning

temporary tablespace on SSD or using RAID0 + 1 to increase the write speed and performance. Therefore, a complicated SQL statement is selected for relevant testing. It is found that the storage path of TempDB has a great impact on the performance. Test Description: A single temporary table contains 55 million rows, and eight temporary tables are generated. The last eight temporary tables are joined by the select group by clause. The test results are as follows: 1. Local Disk 2X136G 10 k

Do you want to build a website that can withstand 5 million pv/a day? What if it's calculated? Go

actual experience, the use of two conventional rack-mounted servers, configuration is very common configuration, such as a 4-core cpu+4g memory + server SAS hard disk.2, the individual arbitrary think in the server CPU domain Intel CPU is superior to AMD CPU, there are objections to it, I said I was arbitrary (see CPU performance comparison), do not believe too much of AMD ads, compare CPU performance simple way is more than the price, not more than

Does it match Oracle Exadata PK?

. Each disk also contains data images on another disk. The disk array cabinet is connected to S-Blades through high-speed channels (3 Gb/s SAS. · The network structure is not marked in. The main network connection lines are on the back of the Cabinet. All components of the Netezza 1000 all-in-one machine are connected through a high-speed network. There are two types of networks: IP network and SAS storage

In Windows XP, how does one block CTRL + ALT + DEL, ALT + tab, and CTRL + ESC key sequences?

press CTRL + ALT + DEL, Winlogon calls this function. (Table 1) Gina function list Function Description Wlxactivateusershell Activate User Shell Wlxdisplaylockednotice Allow Gina DLL to display lock Information Wlxdisplaysasnotice Winlogon calls this function when no user logs in. Wlxdisplaystatusmessage Winlogon calls this function with a status information for display. Wlxgetconsoleswitchcredenti

Hdu1534 schedule problem [difference constraint system]

Schedule problemtime limit: 2000/1000 MS (Java/others) memory limit: 65536/32768 K (Java/Others) Total submission (s): 1283 accepted submission (s): 534 Special Judge Problem descriptiona project can be divided into several parts. each part shoshould be completed continuously. this means if a part shocould take 3 days, we shocould use a continuous 3 days do complete it. there are four types of constrains among these parts which are Fas, FAF, SAF and SAS

Oracle R & D skills

and data volumes, our system should be simplified and simplified, small. System design scaleSpecify the business scale supported by the system, the capacity supported by the system, and whether the system needs to be expanded. The most valuable resources in the system are: CPU, memory, Io, and network. I/O is the most important thing. It is a short board and it is easy to appear in bottles.Refer to the following formula to design a system based on its reference, for example, to design an OLTP s

Introduction to Linux Io scheduler Algorithms

:100,500,101, 1000Noop will meet the requirements in the following order:100 (101), 10 2. CFQThe CFQ algorithm is fully written as completely fair queuing. This algorithm sorts the IP addresses of IO requests, rather than responding in the first and second order.Assume that there are the following Io request sequences:100,500,101, 1000CFQ will meet the requirements in the following order:100,101,500,100, 56In traditional SAS disks, disk seek takes a v

Nginx HttpMemcModule and direct access to Memcached

Test environment: Test Client A: HP dlrjg4, two dual-core CPUs, 4G Ram, two 10 k rpm sas disks for raid 1, ext3 Nginx server B: DELL R710, E5620 * 2, 32G Ram, 6 disks, 15 K RPM SAS disks, raid 1 + 0, xfs Memcached server C: DELL R710, E5620 * 2, 32G Ram, 6 disks, 15 k rpm sas disks, raid 5, ext4 Nginx: keepalive 8192 Php fpm settings: listen. backlog =-1

Windows boot login authentication and Gina DLL

is implemented by WinLogon calling gina dll. gina dll provides an interactive interface to provide authentication requests for user login. Gina dll needs to output the following functions (Winlogon will call ): (1) WlxActivateUserShell: activates the User Shell program.(2) WlxDisplayLockedNotice: Allows gina dll to display the lock information.(3) WlxDisplaySASNotice: when no user logs in, Winlogon calls this function.(4) WlxDisplayStatusMessage: Winlogon calls this function with a status infor

Summary: Four Io Scheduling Algorithms in Linux 2.6 kernel

reveal the characteristics of this algorithm. In short, when I/O occurs, if another process requests Io operations, a default 6-millisecond time will be generated to guess what the next process request Io will do. This will cause a relatively large latency for instant reading, which is very bad for database applications, and good for Web servers. This algorithm can also be simply understood as for low-speed disks, because the "Guess" is actually designed to reduce the head moving time. 4) CFQTh

MySQL optimization and MySQL Optimization

system architecture layer to layer: 1,Underlying hardware layer:The most basic and important is to solve the bottleneck of the following layers of optimization; 2,Operating system layer:Selection and optimization of operating systems, file systems, and network parameters; 3,Cluster architecture layer:The business development architecture also needs to develop; 4,Data Application Layer:Mysql installation and configuration file parameter settings; 5,SQLOptimization layer:SQL statement optimizatio

Analysis on raid

Analysis on raid Let's analyze the main components that affect computer performance, including CPU, bus I/O of the motherboard, memory I/O, hard disk I/O, and Nic I/O. Now the CPU performance is good, however, the overall I/O performance of the computer is low, seriously affecting the computer performance. The current computer's bus I/O and memory I/O speed can reach more than 5G/s, however, disk IO is usually low. Let's analyze several common methods. For SATA hard disks, the speed is less than

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