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 1 LABEL=/boot /boot ext3 defaults 1 2 tmpfs /dev/shm tmpfs defaults 0 0 devpts /dev/pts devpts gid=5,mode=620 0 0 sysfs /sys sysfs defaults 0 0 proc /proc proc defaults 0 0 LABEL=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 -h Filesystem Size Used Avail Use% Mounted on /dev/sda2 95G 7.8G 82G 9% / /dev/sda1 1.9G 42M 1.8G 3% /boot tmpfs 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 in 100+0 records out 104857600 bytes (105 MB) copied, 0.152702 seconds, 687 MB/s real 0m0.154s user 0m0.001s sys 0m0.153s # time dd if=/dev/zero of=file bs=1M count=1000 1000+0 records in 1000+0 records out 1048576000 bytes (1.0 GB) copied, 1.6589 seconds, 632 MB/s real 0m1.710s user 0m0.009s sys 0m1.657s # time dd if=/dev/zero of=file bs=1G count=2 2+0 records in 2+0 records out 2147483648 bytes (2.1 GB) copied, 3.48809 seconds, 616 MB/s real 0m5.899s user 0m0.000s sys 0m5.594s
EMC
# time dd if=/dev/zero of=file bs=1M count=100 100+0 records in 100+0 records out 104857600 bytes (105 MB) copied, 0.175535 seconds, 597 MB/s real 0m0.178s user 0m0.001s sys 0m0.171s # time dd if=/dev/zero of=file bs=1M count=1000 1000+0 records in 1000+0 records out 1048576000 bytes (1.0 GB) copied, 1.67429 seconds, 626 MB/s real 0m1.718s user 0m0.002s sys 0m1.664s # time dd if=/dev/zero of=file bs=1G count=2 2+0 records in 2+0 records out 2147483648 bytes (2.1 GB) copied, 3.46919 seconds, 619 MB/s real 0m3.757s user 0m0.002s sys 0m3.656s