HP StoreOnce D2D4324 HP D2D25xx, 41xx and 43xx Backup System user guide (EH985 - Page 125
Troubleshooting, Connecting to the StoreOnce Backup System from the backup application
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13 Troubleshooting Use the information in this chapter to troubleshoot problems. More detailed troubleshooting information can be found at http://www.hp.com/support. This chapter provides troubleshooting information on: • Connecting to the StoreOnce Backup System from the backup application • Connecting to the network • Using the 10-Gb ports • Performance • Web Management Interface errors and warnings • Power On/Off problems • Cannot connect to Web Management Interface • NFS State handle error • Cannot authenticate an iSCSI session • Diagnostic Fibre Channel device (page 130) • If the HP D2D runs out of space • Cannot access a storage shelf • Backup or replication fails • Recovering devices that have failed to start or have become read-only • StoreOnce Backup System configuration problems • Upgrade licenses • Replacement of hardware • Upgrades to component parts Connecting to the StoreOnce Backup System from the backup application Make sure you have the latest version or software patches for the backup application. Please see http://www.hp.com/go/connect or http://www.hp.com/go/ebs for supported applications. Stop and restart the backup application services after the backup device has been discovered. If you still cannot access the device, check Device Manager to make sure it is accessible from the host. • Make sure that the iSCSI initiator is connected to the devices and log on to them, if they are not, configure them on the Targets tab of the iSCSI Initiator. • If it is not accessible, rerun Discovery. 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. Connecting to the StoreOnce Backup System from the backup application 125
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