如何计算存储的IOPS?

如何决定应用服务器需要多少IOPS?
2024-12-21 18:28:33
推荐回答(1个)
回答1:

首先需要知道I/O中读操作(Read)与写操作(Write)所占的百分比。然后通过下列公式,将主机的IOPS需求转换成硬盘实际IOPS负载:

RAID类型 公式
RAID 5和3 Drive IOPS = Read IOPS + 4*Write IOPS
RAID 6 Drive IOPS = Read IOPS + 6*Write IOPS
RAID 1和1/0 Drive IOPS = Read IOPS + 2*Write IOPS

假定4500 IOPS中读/写比是2:1,则不同RAID类型Drive IOPS要求分别如下:

RAID 1/0: (2/3)*4500 + 2*(1/3)*4500 = 6000 IOPS

RAID 5: (2/3)*4500 + 4*(1/3)*4500 = 9000 IOPS

RAID 6: (2/3)*4500 + 6*(1/3)*4500 = 12000 IOPS
详细方法:https://community.emc.com/message/578435#578435