Hardware manual

Group Administration Group monitoring
15–24
To display the network information, click Group, expand Members, then select the member name, and then click
the
Network tab.
The Status of Network Interfaces panel shows the followi
ng information:
• Operational status – This is the current sta
tus of the network interface and can be:
–
up – Operational, connected to a functioning network, configured with an IP address and subnet mask, and
enabled.
–
down – Not operational, not connected to a functioning network, not configured with an IP address or
subnet mask, or disabled.
• Requested status – This status is set by administrative action:
–
enabled – Configured and serving I/O.
–
disabled – Not serving I/O. Might be configured.
If the operational status is
down, but the requested status is enabled, identify and correct the error.
To protect against network interface or port failure, c
onnect multiple network interfaces on both control
modules to the network.
• Speed – Make sure that the interface speed is adequate.
• MTU size – The path MTU size depends on the iSCSI initiator setting.
• Packet errors – A few packet errors are not usu
a
lly a problem. If a large number of packet errors occur, network
problem or a network interface or port failure might exist. Identify and correct the problem.
The IP Configuration panel shows each interface and its IP address,
netmask, MAC address and description, if any.
Monitoring iSCSI connections to a member
To display all connections to a member, click Group, expand Members, select the member name, and then click the
Connections tab.
The iSCSI Connections panel shows information about the initiator
address, which volume or snapshot it is
connected to (
Target column), how long the connection has been active, and which Ethernet port the initiator is
using.
Check for multiple initiators writing to the same i
SCSI target. This can cause target corruption if not handled
correctly by the servers.
Monitoring volumes, collections, and snapshots
You can monitor volume and snapshot status, volume space usage, volume free space, and snapshot reserve.