HP D2D .HP D2D Backup System user guide (EH985-90907, March 2011) - Page 152

Connecting to the network

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NOTE: There are practical limitations on the number of devices that each host and FC switch or HBA can access. It is possible to configure more drive and library devices than a host can access. The limit for Windows or Linux hosts using the iSCSI interface is 64. Using the Fibre Channel connection there is a theoretical limit of 255 devices per FC port on a host or switch, but the actual limit is usually lower due to switch or host port imposed limits. It is recommended that no more than 64 devices are configured for use by a single host. Connecting to the network NOTE: If you have selected the Link aggregation mode, ensure that switch is configured correctly. If you cannot access your device on the network, please check the following: 1. Regardless of the network configuration mode and interface type, please ensure that there is a CAT-5E (or above) Ethernet cable connected to network port 1 (or 3 for HP D2D4300 Series Backup Systems). This is the primary port for communication to the Web Management Interface and on iSCSI models, the primary port for data communications (apart from HP D2D4300 Series products, which normally use the 10Gb ports for data communications). 2. Check that the LEDs are flashing on the LAN port and the LAN front panel LED. • If no LEDs are flashing, you do not have a network connection - check your Ethernet cable or consult your network administrator. • If LEDs are flashing, check that you have the correct IP address for your HP D2D. Are you using DHCP or Static IP addressing for your HP D2D? If you are unsure of your settings, please use the System Console to confirm the settings that have been configured on your HP D2D (see the HP StoreOnce Backup System Installation and Configuration Guide). 3. Is your network running IPv4 or IPv6 mode? • Your HP D2D will operate and automatically detect both modes of operation. • Ensure that you have selected the correct IP Address for the network you are using. • At this time, the HP D2D does not support DHCPv6, but you can use Static addressing in IPv6 mode. 4. Try to PING / PINGv6 the IP address of the HP StoreOnce Backup System. If PING is successful, there is network communication between the host and the HP D2D. 5. If you still cannot access the HP StoreOnce Backup System, use the standalone Discovery tool. Discovery is run as part of the Installation wizard; it is also installed as a standalone utility on your desktop. Run the Discovery tool and check that the HP StoreOnce Backup System appears in the list of devices for selection. • Use the Beacon option to identify a particular HP StoreOnce Backup System on the network. • If Discovery cannot find the device, check whether there is a Firewall. You may need to temporarily disable it. It can be re-enabled as soon as the device is configured. Or, the HP StoreOnce Backup System may be on a different subnet. 152 Troubleshooting

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NOTE:
There are practical limitations on the number of devices that each host and FC switch or HBA can
access. It is possible to configure more drive and library devices than a host can access. The limit for
Windows or Linux hosts using the iSCSI interface is 64. Using the Fibre Channel connection there is
a theoretical limit of 255 devices per FC port on a host or switch, but the actual limit is usually lower
due to switch or host port imposed limits. It is recommended that no more than 64 devices are
configured for use by a single host.
Connecting to the network
NOTE:
If you have selected the Link aggregation mode, ensure that switch is configured correctly.
If you cannot access your device on the network, please check the following:
1.
Regardless of the network configuration mode and interface type, please ensure that there is a
CAT-5E (or above) Ethernet cable connected to network port 1 (or 3 for HP D2D4300 Series
Backup Systems). This is the primary port for communication to the Web Management Interface
and on iSCSI models, the primary port for data communications (apart from HP D2D4300 Series
products, which normally use the 10Gb ports for data communications).
2.
Check that the LEDs are flashing on the LAN port and the LAN front panel LED.
•
If no LEDs are flashing, you do not have a network connection
–
check your Ethernet cable
or consult your network administrator.
•
If LEDs are flashing, check that you have the correct IP address for your HP D2D. Are you
using DHCP or Static IP addressing for your HP D2D? If you are unsure of your settings, please
use the System Console to confirm the settings that have been configured on your HP D2D
(see the
HP StoreOnce Backup System Installation and Configuration Guide
).
3.
Is your network running IPv4 or IPv6 mode?
•
Your HP D2D will operate and automatically detect both modes of operation.
•
Ensure that you have selected the correct IP Address for the network you are using.
•
At this time, the HP D2D does not support DHCPv6, but you can use Static addressing in IPv6
mode.
4.
Try to PING / PINGv6 the IP address of the HP StoreOnce Backup System. If PING is successful,
there is network communication between the host and the HP D2D.
5.
If you still cannot access the HP StoreOnce Backup System, use the standalone Discovery tool.
Discovery is run as part of the Installation wizard; it is also installed as a standalone utility on
your desktop. Run the Discovery tool and check that the HP StoreOnce Backup System appears
in the list of devices for selection.
•
Use the Beacon option to identify a particular HP StoreOnce Backup System on the network.
•
If Discovery cannot find the device, check whether there is a Firewall. You may need to tem-
porarily disable it. It can be re-enabled as soon as the device is configured. Or, the HP
StoreOnce Backup System may be on a different subnet.
Troubleshooting
152