Happy Path vs Exception Path(Alternate Path)

src:
http://en.wikipedia.org/wiki/Happy_path

notes:
- 15'1/28:
Happy path is term which means a default path in flow description field. The contrast is Exception Path.

Buffer chip - 245

src:
http://www.datasheetarchive.com/74LS245%20buffer-datasheet.html

notes:
- 245 is a buffer chip w/ DIRECTION bit for GPIO direction control. It could be applied for PCH _SERIRQ

Synchronization, Backup, Replication, Consolidation

Src:
http://www.tgrmn.com/web/kb/item27.htm


Notes:
good explaination for these terms

Synchronization : (SRC <- -> DST) src & dst are always synchronized
Backup : (SRC -> DST ) Mirror, just from src to dst
Replication: (SRC -> DST) Only update from src to remote, the old data will still keep in dst
Consolidation : (SRC <- -> DST) src & dst will copy to each other once one file is missed in one side.

Btier

src:
http://sourceforge.net/projects/tier/
http://www.lessfs.com/wordpress/
http://searchstorage.techtarget.com/definition/Automated-storage-tiering-AST

Relative term:
Automated storage tiering (AST)


notes:
- a open source for storage tiering

experiment for DRBD

src:
http://download.ithome.com.tw/article/index/id/2164

note:
- experiment for DRBD

compare btw : RSYNC, DRBD, UNISON

src:
http://qq85609655.iteye.com/blog/1879416

mypdf:
https://drive.google.com/file/d/0B543p5wfySTQNmNyRVhjMFd6bHc/view?usp=sharing

notes:
- [TODO] need further check for features

multiple IP for single NIC

src:
http://xmodulo.com/how-to-assign-multiple-ip-addresses-to-one-network-interface-on-centos.html

notes:

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