[gpfsug-discuss] naive question about rsync: run it on a client or on NSD server?

[Wahl, Edward]

Disregarding all the other reasons not to run it on the NSDs,  many years of rsync on GPFS has shown us it is ALWAYS faster from clients with reasonable networks and no other overhead.

Ed

-----Original Message-----
From: gpfsug-discuss-bounces at spectrumscale.org <gpfsug-discuss-bounces at spectrumscale.org> On Behalf Of Giovanni Bracco
Sent: Friday, February 14, 2020 8:25 AM
To: gpfsug-discuss at spectrumscale.org
Subject: [gpfsug-discuss] naive question about rsync: run it on a client or on NSD server?

We must replicate about 100 TB data between two filesystems supported by two different storages (DDN9900 and DDN7990) both connected to the same NSD servers (6 of them) and we plan to use rsync.

Non special GPFS attributes, just the standard POSIX one, we plan to use the standard rsync.

The question:
is there any advantage in running the rsync on one of the NSD server or is better to run it on a client?

The environment:
GPFS 4.2.3.19, NSD CentOS7.4,  clients mostly CentOS6.4 (connected by IB
QDR) and CentOS7.3 (connected by OPA), connection between NSD and storage with IB QDR)

Giovanni

--
Giovanni Bracco
phone  +39 351 8804788
E-mail  giovanni.bracco at enea.it
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