| Uptime
statistics Network
interface statistics
Disk space
statistics |
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The Reload button updates the 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.
Cluster considerations
If the filer has been taken over, the window displays how long the failed filer has
been down and the host name of the live filer.
The network interface statistics are displayed in the following fields:
- Iface
- Interface name. If an interface name has an asterisk (*) next to it, the interface is
down. The following table lists the names for different types of network interfaces:
| Interface type |
Interface name |
Example |
| Ethernet |
e followed by the slot number |
e2 |
| FDDI |
f followed by the slot number |
f3 |
| ATM |
a followed by the slot number |
a1 |
| Loopback |
lo |
lo |
| Virtual host |
vh |
vh |
- Mtu
- 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
- Network number.
- Address
- Host name for the interface. For example, the host name for interface 0 on a filer named
toaster is toaster-0.
- Ipkts
- Number of incoming packets.
- Ierrs
- Number of errors in incoming traffic.
- Opkts
- Number of outgoing packets.
- Oerrs
- Number of errors in outgoing traffic.
- Collisions
- Number of collisions.
- Queue
- 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.
Cluster considerations
If the filer has taken over its partner, the statistics differ
from the statistics that appear when no takeover has occurred in the following ways:
- Each display reflects the sum of operations that take place on the live filer plus the
operations on the virtual filer. Therefore, the display does not differentiate between the
operations on the live filer and the operations on the virtual filer.
- The statistics displayed by each of these commands are cumulative.
- After giving back the failed partner's resources, the live filer does not subtract the
statistics it performed on behalf of the failed filer in takeover mode.
- The giveback does not reset (zero out) the statistics.
- If you want accurate statistics after a giveback, reset (zero out) the 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
- 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
- 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
- Number of kilobytes used by the file system.
- avail
- Number of kilobytes available to the file system.
- capacity
- Percentage of disk space used in the volume.
- Mounted on
- Same information as in the Filesystem column.
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