aptitude show mdadm

gacanepa@alumno:~$ aptitude show mdadm
Package: mdadm
State: installed
Automatically installed: no
Version: 3.1.4-1+8efb9d1
Priority: optional
Section: admin
Maintainer: Debian mdadm maintainers <pkg-mdadm-devel@lists.alioth.debian.org>
Uncompressed Size: 1,155 k
Depends: libc6 (>= 2.3.6-6~), udev | makedev, debconf (>= 1.4.72), lsb-base (>= 3.1-6)
Recommends: default-mta | mail-transport-agent, module-init-tools
Conflicts: initramfs-tools (< 0.65), mdctl (< 0.7.2), raidtools2 (< 1.00.3-12.1)
Replaces: mdctl
Description: tool to administer Linux MD arrays (software RAID)
 The mdadm utility can be used to create, manage, and monitor MD (multi-disk) arrays for software RAID or multipath I/O.

 This package automatically configures mdadm to assemble arrays during the system startup process. If not needed, this functionality
 can be disabled.
Homepage: http://neil.brown.name/blog/mdadm