Disk /dev/sdb: 999.7 GB, 999653638144 bytes, 1952448512 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x0000cf32

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1   *        2048     4196351     2097152   83  Linux
/dev/sdb2         4196352    37750783    16777216   82  Linux swap / Solaris
/dev/sdb3        37750784   247465983   104857600   83  Linux
/dev/sdb4       247465984  1952448511   852491264   8e  Linux LVM

Disk /dev/sda: 1999.3 GB, 1999307276288 bytes, 3904897024 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0xb294cd36

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1            2048  3904897023  1952447488   83  Linux

Disk /dev/mapper/TB2-VM: 872.9 GB, 872947908608 bytes, 1704976384 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes