- Sun Storage Virtual Tape Library VTL User Guide

96267 • G Appendix C Troubleshooting 231
Case: ConnectionfailswhileexpandingtheVTLservernode
1. Check the memory consumption on the console host.
2. If memory consumption is excessive, stop unnecessary processes, and retry.
3. If you can connect, stop here.
Avoidrunningmemory‐intensiveap pli c atio n sonthis hostwhentheconsoleisin
use.
4. If you cannot connect or if memory consumption appears to be within normal
limits, contact Sun technical support.
Issue: RequestedoperationscannotbeperformedfromtheVTLconsole
Indications: Theserverexhibit ssymptomsofhighCPUutilization,suchasServer Busy or
RPCTimeoutmessages.
Diagnostics: DeterminewhetherhighCPUutilizationisnormal.
1. Check the Event Log or syslog (/var/adm/messages) for CPU-intensive activity
on the server.
Backupjobsthatbackup tomultiplevirtualorphysicaldevicesinparallel,data
compression,andencryptionallplaceheavydemandsontheCPU.
2. If CPU-intensive processes are running on the server, stop here, and retry the
console later.
TheVTLserverisbehaving
normally.
3. If CPU-intensive processes are not running on the server, if the CPU is not
actually busy, or if the problem persists, contact Sun technical support.
Issue: VTLconsoleoperat ion sare veryslow
Indications: TheVTLconsoleisabnormallysloworunresponsive.
Diagnostics: Determinethe reason.
Case: Lowhostsystemmemory
1. Check memory utilization for all running processes on the host.
2. Stop unnecessary processes.
3. If no unnecessary processes are running, provide the host with more memory.