Maclean Liu(刘相兵 发表于 2012-2-9 22:54:31

RAC Storage Case Study –Fiber Channel Vs. NFS

RAC Storage Options
ASM on Raw –Common
Clustered Filesystem–> Linux -OCFS2
-Other OS –dual clusterware !
Raw Devices --Unpopular
NFS –Uncommon, relies on NFS server
Direct NFS –new in 11G
OCR, Voting Disks –needs RAW or NFS ( or ASM for 11GR2 )





Our Fiber Channel/NFS Choice
FC SAN ( Virtualized,Shared )
NFS (Direct, Physical )
CannotUse “Snap” Tools Easily
Easy “Snap” Integration
Higher Performance per CPU
CPUOverhead (less in11g DNFS)
Host Filesystemor ASM
NFS Filesystem
Bandwidth -4 GB/S
1 GbE/ 10GbE
Requires ASM for RAC
ASM notneeded
Expensive HBA, FC switches
Stability concerns(improved in V3)
But Remember…..
Performance SLA is the Key
Maintenance, DR, Cost of Support, Training, Manpower

zhuqibs 发表于 2012-2-12 22:35:45

SAN和iscsi的对比啊，不错啊

aiirii 发表于 2012-7-18 10:27:12

不知道内容如何，这个细节很多ＤＢＡ没怎么留意

1112061 发表于 2012-7-18 10:35:25

赶紧学习下，谢谢。。。

casper0511 发表于 2012-12-4 16:23:58

感谢分享，学习！！！！！

hzcyhujw 发表于 2012-12-4 23:30:11

最近在学习RAC 顺便看下存储的知识
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