原配500GB硬盘，全新安装MARS的默认磁盘使用情况：
[pnadmin]$ diskusage
Filesystem Size Used Avail Use% Mounted on
/dev/hda2 857M 543M 271M 67% /
/dev/hda1 125M 16M 103M 14% /boot
none 2.0G 0 2.0G 0% /dev/shm
/dev/sda5 9.9G 1.2G 8.3G 12% /opt
/dev/sda6 20G 71M 19G 1% /log
/dev/sda7 74G 41M 71G 1% /pnarchive
/dev/sda8 9.9G 30M 9.4G 1% /tmp
/dev/sda9 9.9G 1.8G 7.6G 19% /u01
/dev/sda11 312G 13G 284G 5% /u02
/dev/sda10 9.9G 8.1G 1.3G 87% /u03
升级到1TB硬盘，MARS运行较长时间后，磁盘使用情况基本稳定：
[pnadmin]$ diskusage
Filesystem Size Used Avail Use% Mounted on
/dev/hda2 857M 538M 276M 67% /
/dev/hda1 125M 16M 103M 14% /boot
none 2.0G 0 2.0G 0% /dev/shm
/dev/sda5 9.9G 1.3G 8.2G 14% /opt
/dev/sda6 20G 179M 19G 1% /log
/dev/sda7 74G 13G 58G 18% /pnarchive
/dev/sda8 9.9G 90M 9.3G 1% /tmp
/dev/sda9 9.9G 2.4G 7.0G 26% /u01
/dev/sda11 770G 171G 561G 24% /u02
/dev/sda10 9.9G 8.1G 1.3G 87% /u03
