root@archive /data
$df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/md125       30G  8.2G   22G  28% /
devtmpfs         95G     0   95G   0% /dev
tmpfs            95G     0   95G   0% /dev/shm
tmpfs            95G   17M   95G   1% /run
tmpfs            95G     0   95G   0% /sys/fs/cgroup
/dev/md127      497M  215M  282M  44% /boot
backup           17T  5.5T   11T  35% /backup
data            430G  112G  318G  27% /data

root@archive /data
$ipcs -ma

------ Message Queues --------
key        msqid      owner      perms      used-bytes   messages

------ Shared Memory Segments --------
key        shmid      owner      perms      bytes      nattch     status
0x01127cfc 0          root       600        1000       6
0x07021999 32769      root       644        1704       3

------ Semaphore Arrays --------
key        semid      owner      perms      nsems
0x00000000 65536      apache     600        1
0x00000000 98305      apache     600        1
0x00000000 131074     apache     600        1
0x00000000 163843     apache     600        1
0x00000000 196612     apache     600        1