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本帖最后由 per1-q1222 于 2012-6-10 13:19 编辑
testisitok 发表于 2012-6-10 12:17
H700有些超出预算了
DELL Perc 6I=> 3Gb/s RoC(LSISAS1078)
DELL Perc 6I=> 3Gb/s RoC(LSISAS1078)
IBM M1015=> 6Gb/s IOP(LSISAS2008)
既然6I是RoC,而M1015仅仅是IOP,那么如果我只接WD1003FBYX(3Gb/s)的话,那个性能好些?
correct...RoC使得RAID f/w在大多的操作下透過本身的硬線電路設計處理...
The I/O processor processes I/O. You need a RAID on chip (ROC) processor for hardware RAID. The software RAID controller you are using do not have ROC chips.
Software RAID controllers utilize the system processor to process I/O because they do not utilize ROC chips.
The ROC chip allows all processing to be offset to the RAID controller, not the system processor. Firmware handles striping, consistency checks, I/O, rebuild, recovery
还有M1015和9211-8i同为SAS2008,它们之间有什么区别?
Software RAID Stack不一樣..9211-8i是用IR/IT的firmware...
他不是MegaRAID的產品...
M1015作为软Raid,性能会与硬Raid差很远吗?
可以保證數據可靠性...
但是性能無法和Hardware-based的RoC相比...
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