Re: [gpfsug-discuss] mmchdisk performance/behavior in a stretch cluster config?

2016-11-18 Thread Olaf Weiser
:        Valdis Kletnieks <valdis.kletni...@vt.edu>To:        gpfsug-discuss@spectrumscale.orgDate:        11/18/2016 08:06 PMSubject:        [gpfsug-discuss] mmchdisk performance/behavior in a stretch cluster        config?Sent by:        gpfsug-discuss-boun...@spectrumscale.orgSo as a basi

[gpfsug-discuss] mmchdisk performance/behavior in a stretch cluster config?

2016-11-18 Thread Valdis Kletnieks
So as a basis for our archive solution, we're using a GPFS cluster in a stretch configuration, with 2 sites separated by about 20ms worth of 10G link. Each end has 2 protocol servers doing NFS and 3 NSD servers. Identical disk arrays and LTFS/EE at both ends, and all metadata and userdata are