Three main types of server memory

Source: Internet
Author: User
Keywords Server memory
Tags .mall backup cache check checking customer data error


The current server commonly used memory mainly has three kinds
1.ECC memory, "error Checking and correcting" shorthand, Chinese name is "bug check and correction". General INTEL3XXX Series motherboards use this memory strip
2. REG-DIMM with registers register chip and unbuffered ECC without cache
Memory with register must have buffer (buffer), and currently can see the Register memory also has ECC function, its main application in high-end server and graphics workstation
3. Fully buffered DIMM, full buffer memory module memory
Fb-dimm Another feature is the addition of a piece called "Advanced Memory buffer, short amb" buffer chip. This AMB chip is a data transmission control, and-serial exchange and chip and FB-DIMM implementation of serial communication is multi-channel parallel mainly rely on AMB chip to achieve.
If the INTEL5XXX series motherboard uses this memory-stripe memory type FB-DIMM concept?
Fb-dimm (fully BUFFERED-DIMM, fully buffered memory module) is a new type of memory module and interconnect architecture developed by Intel on DDR2 and DDR3, which can match the current DDR2 memory chip and the future DDR3 memory chip. Fb-dimm can greatly increase the system memory bandwidth and greatly maximize memory capacity. Recovery Large Packet error: failed to open file
After the user has installed the V282SP1 version in the notebook, restores the 700M data packet which previously backed up, restores the error
Customer virtual memory is too small, only 1.5GB. The process of recovering data is to extract the files in the backup package, then put them in the cache and write them to the hard drive. Because Udt_nodeproceinfo.sql a single file is close to 5GB, the customer's actual memory + virtual memory is less than 5GB. So prompt to open file failed
Increase the customer's virtual memory so that physical memory + virtual memory is greater than the capacity of a single table to restore success V280SP1 manual backup is normal and cannot be backed up automatically
Server does not install anti-virus software, manual backup is normal, can not automatically backup small earth modulation information displayed to send the request will not move
According to Wuzhong backup bug solution, adjust oaadmin.cfg after normal. Remove the #stopservice=true # and change the true to False
V280SP1 start small earth failure, log hint IOException while loading persisted sessions
V280SP1 version Small Earth cannot start, log hint IOException while loading persisted sessions:java.io.StreamCorruptedException:invalid stream Header。 Log prompt database connection pool does not exist after emptying work reboot
Tomcat\webapps\yyoa\web-inf web.xml files are mistakenly deleted
Modify the installation path for local files and send them to the customer for replacement resolution

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