HP StoreOnce D2D4324 HP StoreOnce VSA user guide (TC458-96002, July 2013) - Page 126

Cannot authenticate an iSCSI session, If the HP StoreOnce Backup system runs out of disk space

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There are many reasons why you may not see the performance you expected from your HP StoreOnce Backup system. • Your own network speed or disk access is not fast enough to allow streaming of data. • Your backup application is not optimized. • Your HP Backup system is not optimized for your network and application. Cannot authenticate an iSCSI session CHAP authentication is used within HP StoreOnce Backup system. For details of the settings on the Microsoft iSCSI initiator and the HP StoreOnce Web Management Console, see also the HP StoreOnce Backup system Installation and Configuration Guide. If the HP StoreOnce Backup system runs out of disk space A warning message is generated when the HP StoreOnce Backup system reaches 90% capacity. You can expand storage/fs for the virtual machine up to 10 TB capacity (in multiples of 1 TB vdisks) if you have not done so already. See the HP StoreOnce VSA Deployment and Configuration guide for more information. If you are not able to increase actual capacity, you may still be able to create additional space. To increase space without expanding capacity: • Review your backup jobs to see if you can reduce the size of backup or retention time. • Use the backup application job settings to overwrite or erase data. If backup or replication fails Backup fails It is strongly recommended that users check backup application error logs. There are a couple of things that may result in errors: • Exceeding the maximum concurrent jobs • Exceeding the maximum number of concurrent open files for NAS • Exceeding the total number of files in a NAS share • Reconfiguring devices whilst backups are in progress • Deleting replication mappings Refer to the Best Practices for VTL, NAS, StoreOnce Catalyst and Replication implementations for recommended and maximum values. Replication fails If replication needs to take place through a firewall, the network administrator will need to open (TCP) ports 9387 (Command protocol) and 9388 (Data protocol) to allow the replication traffic to pass to and from the HP StoreOnce Backup systems. If the replication Source Appliance fails and goes offline whilst it was performing a NAS replication job, the replication target share appliance may be left in an inconsistent state. This state may result in failure to recover from some files in the share or perform a list of files in the share because relationships between files and folders have been lost. This will automatically be repaired by the target appliance as soon as it detects the loss of the source appliance, however it may take up to 10 minutes to complete this repair during which time the share will not be available for access. If some files are failing to replicate and remain out of sync for long periods of time, check that the backup application is not holding open those files. This can be done by checking that there are no queued or paused jobs in the backup application, or restarting backup application services. If neither action resolves the problem, reboot the backup application server. 126 Troubleshooting

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There are many reasons why you may not see the performance you expected from your HP
StoreOnce Backup system.
•
Your own network speed or disk access is not fast enough to allow streaming of data.
•
Your backup application is not optimized.
•
Your HP Backup system is not optimized for your network and application.
Cannot authenticate an iSCSI session
CHAP authentication is used within HP StoreOnce Backup system. For details of the settings on the
Microsoft iSCSI initiator and the HP StoreOnce Web Management Console, see also the
HP
StoreOnce Backup system Installation and Configuration Guide
.
If the HP StoreOnce Backup system runs out of disk space
A warning message is generated when the HP StoreOnce Backup system reaches 90% capacity.
You can expand storage/fs for the virtual machine up to 10 TB capacity (in multiples of 1 TB vdisks)
if you have not done so already. See the
HP StoreOnce VSA Deployment and Configuration guide
for more information. If you are not able to increase actual capacity, you may still be able to create
additional space. To increase space without expanding capacity:
•
Review your backup jobs to see if you can reduce the size of backup or retention time.
•
Use the backup application job settings to overwrite or erase data.
If backup or replication fails
Backup fails
It is strongly recommended that users check backup application error logs. There are a couple of
things that may result in errors:
•
Exceeding the maximum concurrent jobs
•
Exceeding the maximum number of concurrent open files for NAS
•
Exceeding the total number of files in a NAS share
•
Reconfiguring devices whilst backups are in progress
•
Deleting replication mappings
Refer to the
Best Practices for VTL, NAS, StoreOnce Catalyst and Replication implementations
for
recommended and maximum values.
Replication fails
If replication needs to take place through a firewall, the network administrator will need to open
(TCP) ports 9387 (Command protocol) and 9388 (Data protocol) to allow the replication traffic
to pass to and from the HP StoreOnce Backup systems.
If the replication Source Appliance fails and goes offline whilst it was performing a NAS replication
job, the replication target share appliance may be left in an inconsistent state. This state may result
in failure to recover from some files in the share or perform a list of files in the share because
relationships between files and folders have been lost. This will automatically be repaired by the
target appliance as soon as it detects the loss of the source appliance, however it may take up to
10 minutes to complete this repair during which time the share will not be available for access.
If some files are failing to replicate and remain out of sync for long periods of time, check that the
backup application is not holding open those files. This can be done by checking that there are
no queued or paused jobs in the backup application, or restarting backup application services. If
neither action resolves the problem, reboot the backup application server.
126
Troubleshooting