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可用区(AZ,Availability Zone):一个AZ是一个或多个物理数据中心的集合,有独立的风火水电,AZ内逻辑上再将计算、网络、存储等资源划分成多个集群。一个Region中的多个AZ间通过高速光纤相连,以满足用户跨AZ构建高可用性系统的需求。
Changes will remain in memory only, until you decide to write them. Be careful before using the write command.
Changes will remain in memory only, until you decide to write them. Be careful before using the write command.
Changes will remain in memory only, until you decide to write them. Be careful before using the write command.
df -TH 回显类似如下信息: [root@ecs-1120 linux]# df -TH Filesystem Type Size Used Avail Use% Mounted on /dev/xvda1 ext4 43G 8.3G
df -TH 回显类似如下信息: [root@ecs-test-0001 ~]# df -TH Filesystem Type Size Used Avail Use% Mounted on /dev/vda1 ext4 43G 1.9G
df -TH 回显类似如下信息: [root@ecs-centos74 ~]# df -TH Filesystem Type Size Used Avail Use% Mounted on /dev/vda2 ext4 42G 1.5G