2 Multistream Jobs Not Utilizing All Drives

[halomerchant]

Anyone experienced this in Brightstore Enterprise?

we cannot overlap multistream backups, meaning if one multistream job starts at 5pm using all 6 drives and there is one backup straggling behind taking up a drive when the other multistream job kicks off at 9pm then only 5 drives are utilized the entire time even if the straggler finishes up at 10pm. This leaves an open drive, however, Arcserv is not smart enough to know that and will continue to only write to 5 tapes/drives

I have a CA Engineer coming onsite for a month to work on this because their developers are stumped

 

[vschumpy]

The answer is quite simple if I'm understanding you correctly - you have two multi-stream jobs running one at 5 and one at 9, you are saying that any drives used by the job at 5 aren't released for the job at 9 until the last stream of the 5 job is finished right?

If this is the case, I think this is working as it should. The way ARCserve works in this case is that it will check and reserve the resources it needs when it invokes the job, and release them when the job is finished.

It would seem like it is doing this, but I don't believe it does a check for any additional drives that may become free after the job has started - ie when the job is running. So if there are 5 drives out of 6 available when the job starts, it is only ever going to use 5 drives for that job, even if the 6th becomes available. I don't think it is smart enough to realise that the other drive became available whilst the job is running.