ASM
2024-10-18 23:30:36
一、
磁盘阵列
RAID 5
二、
STRRPE
三、
LAT
四、
[root@localhost ~]# fdisk /dev/sdj
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel. Changes will remain in memory only,
until you decide to write them. After that, of course, the previous
content won't be recoverable.
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel. Changes will remain in memory only,
until you decide to write them. After that, of course, the previous
content won't be recoverable.
Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-261, default 1):
Using default value 1
Last cylinder or +size or +sizeM or +sizeK (1-261, default 261):
Using default value 261
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-261, default 1):
Using default value 1
Last cylinder or +size or +sizeM or +sizeK (1-261, default 261):
Using default value 261
Command (m for help): w
The partition table has been altered!
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
[root@localhost ~]# service oracleasm createdisk VOL9 /dev/sdj1
Marking disk "VOL9" as an ASM disk: [ OK ]
[root@localhost ~]#
Syncing disks.
[root@localhost ~]# service oracleasm createdisk VOL9 /dev/sdj1
Marking disk "VOL9" as an ASM disk: [ OK ]
[root@localhost ~]#
五、
fdisk -l
六、
RAC必用ASM,RAC:两台服务器,共享存储;HA、互为冗余、高可用;内存融合;
七、
dataguard ,这套系统主备库;
八、
DB2的HADR;
九、
dd if=/dev/zero of=/swap.file bs=1M count=1024
mkswap /swap.file
swapon /swap.file
swapon
十、
漂移IP
十一、
Linux的UDEV,Linux下面的硬件管理程序,硬件驱动,设备固定
十二、
集群文件共享系统 ASM:AUTOMATIC、strict、management
十三、
asmca
十四、
集群文件系统 grid:
十五、
外部硬件冗余、软冗余、
十六、
dg、stream
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