Types of memoryat present, the server's memory bus technology is basically not much change, still use DDR3 Technology ,DDR3 is the parallel transmission technology, so to ensure the validity of the parallel data transmission, we must work the memory bar , There are currently three types of memory bars: Udimm, RDIMM, LRDIMM . 1.UDIMM: Also known asunbuffered DIMMs. When data is fromCPUwhen uploading to each
At present, the server's memory bus technology is basically not much change, still use DDR3 technology. DDR3 is a parallel transmission technology, so in order to ensure the validity of parallel data transmission, we must work the memory bar. At present, there are three kinds of memory: Udimm, Rdimm, Lrdimm.
1.UDIMM: Also known as unbuffered DIMMs. When data is transferred from CPU to each memory particle,
The Intel 5500 series Xeon CPU2009 year March launches, everybody in for this series CPU chooses the motherboard to be possible to see the memory support option generally is 2 kinds, one is supports 48G, one kind is 24G, the same server board how can be two kinds of different capacity memory support? The secret is in memory type one is Rdimm, one is Udimm.
Then what is Rdimm? What is Udimm?
Rdimm:register
works in registered mode, when the address signal and control signal on the motherboard reaches the DIMM at the first clock cycle of the data signal. A clock cycle is placed on the register chip and then the rising edge of the next clock signal is output from the register, along with the data signal that arrives at the DIMM from the motherboard at the same time to the SDRAM. When the registered memory work on the common motherboard, for the buffered mode of operation, then all the signal is bas
This article was excerpted from: Http://www.dell.com/support/article/cn/zh/cndhs1/SLN153646/zh#issue3 for personal use as a notePowerEdge R720 System Memory GuideDirectory:
R720 System Memory Guide
Min/MAX memory capacity
Memory Module Installation Guide/installation rules
Memory Mode Specific guidelines
removing/Installing system memory
General fault diagnosis of system memory
Using System diagnostics
Article Summary: This article describes the memor
operating frequencies and significantly increase memory support capacity.
In contrast to the usual unbuffered DIMMs, the registered DIMM used by the server improves the memory support capacity by buffering the signal on the memory strip and driving the memory particles, while LRDIMM memory changes the register chip on the current RDIMM memory to a IMB (Isolation Memory buffer) memory isolation buffer
, only the standard server-type ECC RDIMM, capacity 4GB, 8GB, 16GB, rated frequency is also 2133MHz, voltage 1.2, product number AD4R2133W4G15, AD4R2133Y8G15, Ad4r2133y16g15.
However, Wei just said that the DDR4 version of ECC So-dimm, VLP RDIMM, LRDIMM and other types are also being developed, will soon be introduced.
These memory are used by servers and
-Refresh modes.2. Description of the related art
In typical computer hardware ubuntures, an integrated circuit (IC) memory device chip is controlled by a separate IC memory controller chip that controls the writing of data to and the reading of data from the memory device during normal operations of the memory device. some memory devices are capable of operating in a self-Refresh mode in which the memory device maintains its stored data without any active command from the memory controller, such
purchase the appropriate vsphere license.Third, server planningIn the experimental environment, three PowerEdge R720 servers and two Dell PowerEdge R420 were used, the first of which were used as ESXi hosts, and the latter for data backup (VDP, also ESXi host) and iSCSI soft Storage (CentOS iSCSI virtual hard disk) host.The 3 R720 (ESXI-MGT, esxi01, esxi02) configurations for the Exsi compute node host are identical, as follows:
Processor
Memory
Hard disk
Card
The RDIMM (register DIMM, which is the buffered DIMM memory), can supportMaximum memory capacity, and supports RAS features (RAS technology---reliability, availability, and serviceability refer to reliability R, availability A, maintainability S3 indicators, is an important part of evaluating the performance of computer systems. If the user wants to perform the highest machine performance (single 4/8gb,3 channel, 18 slot full plug) must use
Name
Configuration description
Remarks
Hardware environment
Standard memoryComputing node
Ibm flex system x240 computing node-2 E5-2690 CPUs (2.9 GHz/8-core) total 16 cores-128 GB rdimm ddr3 memory-Two 300 GB 10 krpm hot swapping SAS Disks-4 1 GB Ethernet ports-Two FDR 56 GB InfiniBand Network Ports
Floating Point peak computing capability7,424 gflops,320 CPU cores in total
Large MemoryComputing node
that the database pressure is very high, especially on the LevelA node:
The hardware configuration is as follows:CPU: Intel®Xeon®Processor E5-2609 (4-core, 2.40 GHz, 10 MB, 6.4 GT/s)Memory: 4 GB (2x2 GB) DDR3 RDIMM Memory, 1333 MHz, ECCHard Disk: 500 GB 7200 RPM 3.5 ''SATA3 hard drive, Raid5.
Database VersionThe standard version of SQLServer2012 is used. The genuine software provided by HP lacks many NB functions of the Enterprise Edition.
Write bo
The IBM System x3650 M3 is a dual-rack server with an Intel Xeon E5606 CPU. It has outstanding performance and excellent scalability. It comes with System management software, it is convenient for users to quickly deploy and is a server that is not very suitable for small and medium-sized enterprises to purchase.
Product aspect:
Intel Xeon E5606 CPU
Dual-rack Server
IBM System x3650 M3
Product Configuration:
(1) In terms of the processor, it comes standard with a GHz CPU, using a 32 nm
When purchasing servers, we usually only consider the current budget and configuration, but ignore the cost and problems of later upgrade of accessories. In general, we don't need to care too much about memory particles. Almost all server vendors recommend that users use their own server-branded memory to replace and upgrade BKJIA. recommended Article: server upgrade hardware-CPU ).
We all know that the server memory is different from the memory of a common PC, generally with the ECC verificati
(1) The Unix operating system was born in 1969 and was invented by Ken Thompson (Ken Thompson) and Dennis Ritchie (Dennis Ritchie) of Bell Labs in the United States.(2) 1972 C Speech birth, because UNIX before using assembly language written, data migration difficult, so 1973 years Unix with C language rewrite success.(3) In 1991, the Linux system was released, and Http://www.gnu.org;GNU was publicly launched by Richard Stallman, a fully free and free operating system;Linus launched the kernel,
, in order to save the hassle and reduce unnecessary trouble, we put the relevant services together so that we can take full advantage of HA features (externally purchased HA system)
System data correctness requirements are extremely abnormal, requires from the bottom of the collection system to the top of the monitoring system, a data can not be poorOur system architecture is as follows, and we can see that the database pressure is very large, especially in the Levela node:
The hardware
optimized before the CPU occupies 80% or more year-round. Because the project requires the use of dual-machine hot standby, in order to save the hassle and reduce unnecessary trouble, we put the relevant services together so that we can take full advantage of HA features (externally purchased HA system)
System data correctness requirements are extremely abnormal, requires from the bottom of the collection system to the top of the monitoring system, a data can not be poorOur system architect
system to the top of the monitoring system, a data can not be poorOur system architecture is as follows, and we can see that the database pressure is very large, especially in the Levela node:
The hardware configuration is as follows:CPU: intel® xeon® Processor e5-2609 (4-Core, 2.40GHz, 10MB, 6.4 gt/s)Memory : 4GB (2X2GB) DDR3 RDIMM memory, 1333MHZ,ECCHDD : 500GB 7200 RPM 3.5 ' SATA3 HDD, RAID5.
Database versionThe use of the SQLSERVER2012 st
system to the top of the monitoring system, a data can not be poorOur system architecture is as follows, and we can see that the database pressure is very large, especially in the Levela node:
The hardware configuration is as follows:CPU: intel® xeon® Processor e5-2609 (4-Core, 2.40GHz, 10MB, 6.4 gt/s)Memory : 4GB (2X2GB) DDR3 RDIMM memory, 1333MHZ,ECCHDD : 500GB 7200 RPM 3.5 ' SATA3 HDD, RAID5.
Database versionThe use of the SQLSERVER2012 st
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