| Title: | "ASK THE WIZARDS" |
| Moderator: | QUARK::LIONEL |
| Created: | Mon Oct 30 1995 |
| Last Modified: | Mon May 12 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 1857 |
| Total number of notes: | 3728 |
Return-Path: "VMS001::WWW"@vms001.das-x.dec.com Received: by vmsmkt.zko.dec.com (UCX V4.1-12, OpenVMS V6.2 VAX); Mon, 3 Feb 1997 14:29:44 -0500 Received: from vms001 by mail11.digital.com (8.7.5/UNX 1.5/1.0/WV) id OAA09884; Mon, 3 Feb 1997 14:23:45 -0500 (EST) Date: Mon, 3 Feb 1997 14:23:44 -0500 Message-Id: <[email protected]> From: "VMS001::WWW"@vms001.das-x.dec.com (03-Feb-1997 1423) To: [email protected], [email protected], [email protected] Subject: Ask the Wizard: '[email protected]' X-VMS-To: [email protected] Remote Host: dial65.panama.c-com.net Browser Type: Mozilla/2.0 (compatible; MSIE 3.0; SK; Windows 95) Remote Info: <null> Name: AKIM CANTON Email Address: [email protected] CPU Architecture: VAX Version: v 6.2 Questions: i recently purchased a TZ87 tape drive, with the ability to backup up to 20 GB in 1 hour. However, using the OpenVMS backup command, my backups are very slow: about 1 hour per each 2 GB. Is there a way to enhance this? I defragmented the disks, already. How can i get the 20 GB backed up in an hour aprox?
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 1593.1 | Find The Limit... | XDELTA::HOFFMAN | Steve, OpenVMS Engineering | Wed Feb 12 1997 11:58 | 13 |
Check the throughput on the SCSI bus in use, on the host system, and on the disk in use. It is quite possible that one or more of these are limiting the ability to write data to the tape. Check the documentation for information on suggested quotas for the BACKUP username, and make sure the host does not become starved for paged and non-paged pool. Also check the particular qualifiers used on BACKUP. If this is a system disk, consider using /NOALIAS. Also consider increasing the data transfer size values. | |||||