We use our DD880s as VTLs and we have 80 imaginary tape drives in each DD. We get this message many times every day: Mar 21 00:08:41 DD880 ddfs[5400]: WARNING: MSG-NFS-00006: Too many open file system streams. 17 files accessed in the past 30-seconds, with 0 files reopened for read, and 1 files reopened for write.
Support has told us that we do not have too many streams. The stream limit is not a hard limit. The message mostly occurs during migration from our disk pools, although this one is during the backup window. Also a front end disk pool is a good idea if you cannot handle an hour outage for the code upgrades. Andy Huebner -----Original Message----- From: ADSM: Dist Stor Manager [mailto:ADSM-L@VM.MARIST.EDU] On Behalf Of Richard Rhodes Sent: Tuesday, March 22, 2011 12:25 PM To: ADSM-L@VM.MARIST.EDU Subject: Re: [ADSM-L] draining a diskpool when using a DD and no copypool "ADSM: Dist Stor Manager" <ADSM-L@VM.MARIST.EDU> wrote on 03/22/2011 12:31:53 PM: > > Interesting - didn't know there was that session limit on the DD!~ > Thanks for the info! > W > I misspoke . . .we have DD880's. It's limit is 180 sessions. The manual states the limit rather strangely . . It says: Platform Ram Total Max Max Write Max Mixed Write with OptDup Read DD880 64gb 180 180 90 50 <= 180 writes and <= 50 reads This seems to say there is a MAX of only 50 read sessions. In asking for a clarification about this I was told that it's basically 180 sessions max of any combined type, and this includes replication sessions. It doesn't read that way, but that's what I was told. Oh - "OptDup" is low bandwidth optimization for replication - something to help really, really slow replication connections. Rick ----------------------------------------- The information contained in this message is intended only for the personal and confidential use of the recipient(s) named above. If the reader of this message is not the intended recipient or an agent responsible for delivering it to the intended recipient, you are hereby notified that you have received this document in error and that any review, dissemination, distribution, or copying of this message is strictly prohibited. If you have received this communication in error, please notify us immediately, and delete the original message. This e-mail (including any attachments) is confidential and may be legally privileged. If you are not an intended recipient or an authorized representative of an intended recipient, you are prohibited from using, copying or distributing the information in this e-mail or its attachments. If you have received this e-mail in error, please notify the sender immediately by return e-mail and delete all copies of this message and any attachments. Thank you.
