Operational status

This window provides the following types of statistics:

• Uptime statistics
• Network interface statistics
• Disk space statistics

The Reload button updates the statistics.

Uptime statistics

The statistics show the current time, the length of time the filer has been up and running, and the number of NFS, CIFS, and HTTP operations since the last reboot.

Network interface statistics

The network interface statistics are displayed in the following fields:

• Iface is the interface name. For an Ethernet interface, the name is e followed by the slot number (for example, e2). For an FDDI interface, the name is f followed by the slot number (for example, f3). For an ATM interface, the name is a followed by the slot number (for example, a1). The loopback address is displayed as lo.

  If an interface name has an asterisk (*) next to it, the interface is down.

• MTU is the maximum transmission unit. By default, the MTU is 4352 on an FDDI interface, 1500 on an Ethernet interface, and 9188 on an ATM interface.
• Network is the network number.
• Address is the host name for the interface. For example, the host name for interface 0 on a filer named toaster is toaster-0.
• Ipkts is the number of incoming packets.
• Ierrs is the number of errors in incoming traffic.
• Opkts is the number of outgoing packets.
• Oerrs is the number of errors in outgoing traffic.
• Collisions is the number of collisions.
• Queue is the number of packets in the queue.

If you see excessive input errors or output errors, check the network connections on both ends of the connection. Bad transceivers or network hubs can sometimes introduce errors into the network.

Collisions are a concern only if the filer detects a substantial percentage of collisions as compared to the total packet throughput. The goal is to keep collisions below 5 percent, but a network can operate properly (but slowly) with collision rates as high as 30 percent.

Disk space statistics

The disk space statistics show how much disk space is consumed by the active file system and snapshot in each volume. The types of information displayed are described as follows:

• Filesystem is the name of the file system. It can be a path name to a volume or a path name to the snapshot in a volume.
• kbytes is the number of kilobytes of disk space for the file system.

  For an active file system, this number doesn't include the parity disk, hot spare, snapshot reserve, and about 10 percent of the disk space reserved for efficiency. Therefore, this number is smaller than the total amount of disk space you installed for the volume.

  For a snapshot, this number is the same as the amount of disk space reserved for snapshots in that volume.

• used is the number of kilobytes used by the file system.
• avail is the number of kilobytes available to the file system.
• capacity is the percentage of disk space used in the volume.