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这篇文章主要介绍centos6超20TB磁盘的分区格式化的案例，文中介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们一定要看完！
一、服务器环境配置：
1、检查磁盘分区：
近期项目有个服务从虚拟机迁移到物理机，服务磁盘用户自己做了raid为3.8TB 2块磁盘配置 Raid1然后又3.8TB 6块磁盘配置了Raid5，安装操作系统使用的sda 3.8TB空间的raid1已分区。3.8TB*6的磁盘sdb共20TB的空间需要分区，并挂载给系统做存储使用。步骤如下:
1.1查询确认sdb状态：
# fdisk -l
WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted.
Disk /dev/sda: 4000.2 GB, 4000225165312 bytes
255 heads, 63 sectors/track, 486333 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000
Device Boot Start End Blocks Id System
/dev/sda1 1 267350 2147483647+ ee GPT
Partition 1 does not start on physical sector boundary.
WARNING: GPT (GUID Partition Table) detected on '/dev/sdb'! The util fdisk doesn't support GPT. Use GNU Parted
Disk /dev/sdb: 20001.1 GB, 20001125826560 bytes
255 heads, 63 sectors/track, 2431665 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000
Device Boot Start End Blocks Id System
/dev/sdb1 1 267350 2147483647+ ee GPT
Partition 1 does not start on physical sector boundary.
Disk /dev/mapper/VolGroup-LogVol00: 2531.7 GB, 2531690283008 bytes
255 heads, 63 sectors/track, 307793 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000
Disk /dev/mapper/VolGroup-LogVol01: 1468.0 GB, 1468006400000 bytes
255 heads, 63 sectors/track, 178474 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000
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