Re: Onbar Backup?

Venkatesh, Well, the backup speed is dependant on the type of tape drive you have. For a DLT7000 you should get about 40-50 GB/hour. Backing-up to a disk storage unit is the fastest speed you will ever get, so you can benchmark against this. The Informix "arc_very_old_page" bug is 101062, fixed in 9.21.UC5. I doubt that you are running into this, but you can always look at the stack of the ontape processes and see if you are encountering the "arc_very_old_page" function. Run "onstat -g ath" and get the session if of the ontape process, and then run "onstat -g stk <session_id>". Instead of setting BAR_MAX_BACKUP to 8, set it to zero (unlimited). Then make a storage group with several tape drives, and set your Informix policy to this storage group. Do not limit jobs per policy. Avoid multiplexing . . . though it speeds the backup, it will drastically slow the restore. If you have a /usr/openv/netbackup/logs/bptm log of this backup, you can see if the Informix backup is wating for full buffers (from the Informix instance) or waiting for empty buffers (the tape library taking the information from netbackup). You'll aways get a few waits, but if the number of waits gets into the tens of thousands, it's a concern. Hope this information helps. Also consider sending this questions to the veritas newsgroup at "veritas.netbackup.datacenter.english" or opening a case with Veritas support. Hope this information helps. Brice Avila Minneapolis, Minnesota "Venkatesh Konnur" <VNKONNUR@kcc.usda.gov> wrote in message news:<beejgh$dvk$1@terabinaries.xmission.com>... > Hi, > I am running Level-1 backup on IDS 9.4.UC1 ,SunOS 8. > > My question is even though multiplexing is on and set to 8 in the > onconfig as well as on the Netbackup side. (Veritas Storage Manager ), > the Level-0 backups take about 12 Hours to complete for backing up 90 > dbspaces. > > Each dbspace is about 2 GB in size. > > Secondly, when I want to look at stack output for the threads running > the backups, in "onstat -g ath" output, I donot see arcbackup thread but > instead 9 ontape backup threads. > Hence, not able to determine if we are hitting the old > arc_very_old_pages bug. > > Moreover, in the infx_db_comm directory under /usr/openv/netbackup... > directory, the output for the storage Manager ID for e.g :does show > that may be even multiplexing is not working: > > fsaatdw1 $more infxbsa.1057670308.27198.1 > 08:18:31 Initiating backup > 08:19:27 INF - Waiting in NetBackup scheduler work queue on server > kcax09 > 08:20:12 INF - Waiting in NetBackup scheduler work queue on server > kcax09 > 08:21:01 INF - Waiting in NetBackup scheduler work queue on server > kcax09 > 08:21:53 INF - Waiting in NetBackup scheduler work queue on server > kcax09 > 08:22:37 INF - Waiting in NetBackup scheduler work queue on server > kcax09 > 08:23:22 INF - Waiting in NetBackup scheduler work queue on server > kcax09 > 08:24:06 INF - Waiting in NetBackup scheduler work queue on server > kcax09 > 08:24:50 INF - Waiting in NetBackup scheduler work queue on server > kcax09 > 08:25:35 INF - Waiting in NetBackup scheduler work queue on server > kcax09 > 08:26:18 INF - Starting bpbrm > 08:26:21 INF - Data socket = kcax09.IPC:/tmp/vnetCDVx7a > 08:26:21 INF - Name socket = kcax09.IPC:/tmp/vnetCDVx7b > 08:26:21 INF - Frozen image = 0 > 08:26:21 INF - Backup copy = 0 > 08:26:22 INF - Master server = kcax09 > 08:26:22 INF - New data socket = kcax09.IPC:/tmp/vnetCr.YEa > 08:26:22 INF - Backup id = eclipse_1057670970 > 08:26:22 INF - Compression = 0 > 08:26:22 INF - Backup time = 1057670970 > 08:26:23 INF - Encrypt = 0 > 08:26:23 INF - Multiplexing = 8 > 08:26:23 INF - Client read timeout = 900 > 08:26:23 INF - Media mount timeout = 0 > 08:26:37 INF - Beginning backup on server kcax09 of client eclipse. > 08:27:21 INF - Server status = 0 > 08:27:24 INF - Server status = 0 > 08:27:28 INF - Backup by informix on client eclipse: the requested > operation was > successfully completed. > > Does anybody know to overcome this issue ? > > Thanks in advance. > Venaktesh Konnur > sending to informix-list

Venkatesh, Learned that Informix 9.4 isn't on the support matrix for any version of NetBackup yet. It still should work, but watch out trying to take advantage of the new 9.4 features, i.e. backing-up dbspaces > 2GB.