IO测试软件–orion
作者：sansky | 发布日期：Jul 1st, 2007年作者：piner 原地址： http://www.ixdba.com/html/y2007/m06/125-orion-storage-test.html
orion，一款由Oracle公司提供，专门用于模拟数据库运行机制来测试存储的优秀IO存储测试软件，可以在不运行oracle数据库的情况下，仿真OLTP随机操作（...
Posts Tagged: IO
RAID7工作原理图解及特点分析
作者：sansky | 发布日期：Jun 19th, 2007年RAID 7: Optimized Asynchrony for High I/O Rates as well as High Data Transfer Rates
Architectural Features:
1. All I/O transfers are asynchronous, independently controlled and cached including host interface transfers
2. All reads and write are centrally cached via the high spe...
RAID6工作原理图解及特点分析
作者：sansky | 发布日期：Jun 19th, 2007年RAID 6: Independent Data disks with two independent distributed parity schemes
Characteristics/Advantages
1. RAID 6 is essentially an extension of RAID level 5 which allows for additional fault tolerance by using a second independent distributed parity scheme (two-dimensional parity)...
RAID5工作原理图解及特点分析
作者：sansky | 发布日期：Jun 19th, 2007年RAID 5: Independent Data disks with distributed parity blocks
Characteristics/Advantages
1. Highest Read data transaction rate
2. Medium Write data transaction rate
3. Low ratio of ECC (Parity) disks to data disks means high efficiency
4. Good aggregate transfer rat...
RAID4工作原理图解及特点分析
作者：sansky | 发布日期：Jun 19th, 2007年RAID 4: Independent Data disks with shared Parity disk
Characteristics/Advantages
1. Very high Read data transaction rate
2. Low ratio of ECC (Parity) disks to data disks means high efficiency
3. High aggregate Read transfer rate
Disadvantages
1. Quite complex...
RAID3工作原理图解及特点分析
作者：sansky | 发布日期：Jun 19th, 2007年RAID 3: Parallel transfer with parity
Characteristics/Advantages
1. Very high Read data transfer rate
2. Very high Write data transfer rate
3. Disk failure has an insignificant impact on throughput
4. Low ratio of ECC (Parity) disks to data disks means high efficien...
RAID2工作原理图解及特点分析
作者：sansky | 发布日期：Jun 19th, 2007年RAID 2: Hamming Code ECC
Characteristics/Advantages
1. “On the fly” data error correction
2. Extremely high data transfer rates possible
3. The higher the data transfer rate required, the better the ratio of data disks to ECC disks
4. Relatively simple c...
RAID1工作原理图解及特点分析
作者：sansky | 发布日期：Jun 19th, 2007年RAID1: Mirroring and Duplexing
Characteristics/Advantages
1. One Write or two Reads possible per mirrored pair
2. Twice the Read transaction rate of single disks, same Write transaction rate as single disks
3. 100% redundancy of data means no rebuild is necessary in case ...
RAID0工作原理图解及特点分析
作者：sansky | 发布日期：Jun 19th, 2007年RAID 0: Striped Disk Array without Fault Tolerance
Characteristics/Advantages
1. RAID 0 implements a striped disk array, the data is broken down into blocks and each block is written to a separate disk drive
2. I/O performance is greatly improved by spreading the I/O load acros...
