RAID10 (146G*8) vs EMC VNX 5300 (8G Fibre Channel)
服务器RAID卡带宽是6G，而Fibre Channel目前是8G，ISCSI与FCoE 可以提供 10G带宽，InfiniBand可以提供120G带宽。
# cat /etc/fstab LABEL=/ / ext3 defaults 1 1LABEL=/boot /boot ext3 defaults 1 2tmpfs /dev/shm tmpfs defaults 0 0devpts /dev/pts devpts gid=5,mode=620 0 0sysfs /sys sysfs defaults 0 0proc /proc proc defaults 0 0LABEL=SWAP-sda3 swap swap defaults 0 0/dev/sda4 /home/oracle/rman ext3 defaults 0 2/dev/sdb1 /opt/oracle ext3 defaults 0 2/dev/emcpowerj1 /u02 ext3 defaults 0 0# df -hFilesystem Size Used Avail Use% Mounted on/dev/sda2 95G 7.8G 82G 9% //dev/sda1 1.9G 42M 1.8G 3% /boottmpfs 63G 534M 63G 1% /dev/shm/dev/sda4 924G 619G 258G 71% /home/oracle/rman/dev/sdb1 1.1T 309G 735G 30% /opt/oracle/dev/emcpowerj1 296G 20G 261G 7% /u02
IBM X3850 G5
# time dd if=/dev/zero of=file bs=1M count=100 100+0 records in100+0 records out104857600 bytes (105 MB) copied, 0.152702 seconds, 687 MB/sreal0m0.154suser0m0.001ssys0m0.153s# time dd if=/dev/zero of=file bs=1M count=10001000+0 records in1000+0 records out1048576000 bytes (1.0 GB) copied, 1.6589 seconds, 632 MB/sreal0m1.710suser0m0.009ssys0m1.657s# time dd if=/dev/zero of=file bs=1G count=2 2+0 records in2+0 records out2147483648 bytes (2.1 GB) copied, 3.48809 seconds, 616 MB/sreal0m5.899suser0m0.000ssys0m5.594s
EMC
# time dd if=/dev/zero of=file bs=1M count=100100+0 records in100+0 records out104857600 bytes (105 MB) copied, 0.175535 seconds, 597 MB/sreal0m0.178suser0m0.001ssys0m0.171s# time dd if=/dev/zero of=file bs=1M count=10001000+0 records in1000+0 records out1048576000 bytes (1.0 GB) copied, 1.67429 seconds, 626 MB/sreal0m1.718suser0m0.002ssys0m1.664s# time dd if=/dev/zero of=file bs=1G count=22+0 records in2+0 records out2147483648 bytes (2.1 GB) copied, 3.46919 seconds, 619 MB/sreal0m3.757suser0m0.002ssys0m3.656s
