RE: Interactive Subsystem Ending

["Graap, Ken" <keg@xxxxxxxxxxxxxxxxxx>]

>I was having the same problem - hundreds of QPAD* devices costing me 20+
minutes on my nightly backup.

We use autoconfig to automatically create device descriptions for telnet
connections, so over the course of a day we will have hundreds of QPADEV*
devices created. When I quiesce the system for backups by ending subsystem
QINTER in a *CNTRLD state and then *IMMED 10 minutes later, I follow this by
submitting a job which varies off and then deletes all the QPADEV* device
descriptions. When QINTER is restarted,  after I have reached a
Save_While_Active synchronization, it starts up in just a few seconds
because it doesn't have to allocate hundreds of device descriptions. This
has trimmed about 15-20 minutes off my downtime for a backup run.

The overhead associated with recreating these device descriptions as people
sign on in the morning seems to be insignificant compared with the increased
total system downtime I had to live with when I didn't delete the virtual
devices.

Kenneth

****************************************
Kenneth E. Graap
IBM Certified Specialist
AS/400 Professional
Network Administrator
NW Natural (Gas Services)
keg@nwnatural.com
Phone: 503-226-4211 x5537
FAX:    603-849-0591
****************************************




-----Original Message-----
From: Todd kidwell [mailto:Todd.kidwell@3cc.co.wayne.mi.us]
Sent: Wednesday, June 28, 2000 1:26 PM
To: MIDRANGE-L@midrange.com
Subject: Re: Interactive Subsystem Ending

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