AIX does supported NFSv4. I'd love to get the time to try it out, but DataDomains only support NVSv4 with the newest release and we are several levels back. https://www.redbooks.ibm.com/redbooks/pdfs/sg246657.pdf
When our admins found that multiple/concurrent mount points helped for Oracle/RMAN backups, I converted out DataDomain mounts from single mounts to multiple mounts. I then changed the file pool devclass to use multiple directories (one per new mount). I pulled the original directory out of the file pool definition, marked all it's volumes R/O, and movedata all vols. TSM put the vols across the multiple mount points. Lets just say this took quite some time! The scary things was convincing myself (via testing) that I could remove a directory from the devclass and still access those volumes. original single mount: ddxxxx-10g:/data/col1/tsm1 1274748715008 323228344320 75% 103091 1% /DD/tsm1 file pool was at /DD/tsm1/backup-pri-dd changed to these mounts ddxxxx-10g:/data/col1/tsm1 1274748715008 323228344320 75% 103091 1% /DD/tsm1 ddxxxx-10g:/data/col1/tsm1/backup-pri-dd-1 1274748715008 323228344320 75% 103091 1% /DD/backup-pri-dd-1 ddxxxx-10g:/data/col1/tsm1/backup-pri-dd-2 1274748715008 323228344320 75% 103091 1% /DD/backup-pri-dd-2 ddxxxx-10g:/data/col1/tsm1/backup-pri-dd-3 1274748715008 323228344320 75% 103091 1% /DD/backup-pri-dd-3 ddxxxx-10g:/data/col1/tsm1/backup-pri-dd-4 1274748715008 323228344320 75% 103091 1% /DD/backup-pri-dd-4 Note, this did not require any additional exports from the DataDomain, just creating some directories in it. This is the devclass for the Datadomain mount Device Class Name: BACKUP-PRI-DD Storage Pool Count: 1 Device Type: FILE Directory: /DD/backup-pri-dd-1,/DD/backup-pri-dd-2,/DD/backup-pri-dd-3,/DD/backup-pri-dd-4 Note - prior to this change the devclass only had Directory: /DD/tsm1/backup-pri-dd -----Original Message----- From: ADSM: Dist Stor Manager <ADSM-L@VM.MARIST.EDU> On Behalf Of Harris, Steven Sent: Sunday, May 13, 2018 8:39 PM To: ADSM-L@VM.MARIST.EDU Subject: [EXTERNAL] Re: ISILON storage/FILE DEVCLASS performance issues Zoltan I have a similar issue TSM 7.1.1.300 AIX -> Data Domain. Have dual 10Gb links, but can only get ~4000 writes/sec and 120MB/sec throughput. AIX only supports NFS3, and as others have pointed out in this forum recently, the stack does not have a good reputation. I'm finding that the heavy NFS load has other knock on effects, e.g. TSMManager keeps reporting the instance offline when it's very busy as it gets a network error on some of its regular queries, but these work ok when load is light. Also getting a lot of Severed/reconnected sessions. CPU/IO/Paging are not a problem. Cheers Steve Steven Harris TSM Admin/Consultant Canberra Australia -----Original Message----- From: ADSM: Dist Stor Manager [mailto:ADSM-L@VM.MARIST.EDU] On Behalf Of Zoltan Forray Sent: Saturday, 12 May 2018 1:39 AM To: ADSM-L@VM.MARIST.EDU Subject: [ADSM-L] ISILON storage/FILE DEVCLASS performance issues Folks, ISP 7.1.7.300 on RHEL 6 10G connectivity We need some guidance on trying to figure out why ISP/TSM write perform to ISILON storage (via FILE DEVCLASS) is so horrible. We recently attached 200TB of ISILON storage to this server so we could empty the 36TB of onboard disk drives to move this server to new hardware. However, per my OS and SAN folks, we are only seeing 1Gbs level of data movement from the ISP server. Doing a regular file copy to this same storage peaks at 10Gbs speeds. So what, if anything, are we doing wrong when it comes to configuring the storage for ISP to use? Are there some secret controls/settings/options to tell it to use the storage at max-speeds? We tried changing the Est/Max capacity thinking larger files would reduce the overhead of allocating new pieces constantly. Changed the Mount Limit to a bigger number. Nothing has helped. Only thing uses the storage right now is migrations from the original disk stgpool. -- *Zoltan Forray* Spectrum Protect (p.k.a. 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