Hi Tom, >>we are trying to implement a mixed linux/windows environment and we have one thing at the top - is there any global method to avoid asynchronous I/O and write everything in >>synchronous mode? If the local and remote sites have good inter-site network bandwidth and low-latency, then you may consider using GPFS synchronous replication at the file-system level (-m 2 -r 2). The Spectrum Scale documentation (link below) has further details. https://www.ibm.com/docs/en/spectrum-scale/5.1.0?topic=data-synchronous-mirroring-gpfs-replication Regards, -Kums From: gpfsug-discuss-bounces at spectrumscale.org <gpfsug-discuss-bounces at spectrumscale.org> On Behalf Of Tomasz Rachobinski Sent: Monday, May 24, 2021 9:06 AM To: gpfsug-discuss at spectrumscale.org Subject: [gpfsug-discuss] Spectrum Scale - how to get RPO=0 Hello everyone, we are trying to implement a mixed linux/windows environment and we have one thing at the top - is there any global method to avoid asynchronous I/O and write everything in synchronous mode? Another thing is - if there is no global sync setting, how to enforce sync i/o from linux/windows client? Greetings Tom Rachobinski -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://gpfsug.org/pipermail/gpfsug-discuss_gpfsug.org/attachments/20210524/bf198bcd/attachment.html>