[gpfsug-discuss] Underlying LUN mirroring NSD impact
Yaron Daniel
YARD at il.ibm.com
Fri Mar 16 08:46:37 GMT 2018
Hi
You can have few options:
1) Active/Active GPFS sites - with sync replication of the storage - take
into account the latency you have.
2) Active/StandBy Gpfs sites- with a-sync replication of the storage.
All info can be found at :
https://www.ibm.com/support/knowledgecenter/en/STXKQY_4.2.1/com.ibm.spectrum.scale.v4r21.doc/bl1adv_continous_replication_SSdata.htm
Synchronous mirroring with GPFS replication
In a configuration utilizing GPFS? replication, a single GPFS cluster is
defined over three geographically-separate sites consisting of two
production sites and a third tiebreaker site. One or more file systems are
created, mounted, and accessed concurrently from the two active production
sites.
Synchronous mirroring utilizing storage based replication
This topic describes synchronous mirroring utilizing storage-based
replication.
Point In Time Copy of IBM Spectrum Scale data
Most storage systems provides functionality to make a point-in-time copy
of data as an online backup mechanism. This function provides an
instantaneous copy of the original data on the target disk, while the
actual copy of data takes place asynchronously and is fully transparent to
the user.
Regards
Yaron Daniel
94 Em Ha'Moshavot Rd
Storage Architect
Petach Tiqva, 49527
IBM Global Markets, Systems HW Sales
Israel
Phone:
+972-3-916-5672
Fax:
+972-3-916-5672
Mobile:
+972-52-8395593
e-mail:
yard at il.ibm.com
IBM Israel
From: Mark Bush <Mark.Bush at siriuscom.com>
To: "gpfsug-discuss at spectrumscale.org"
<gpfsug-discuss at spectrumscale.org>
Date: 03/14/2018 10:10 PM
Subject: [gpfsug-discuss] Underlying LUN mirroring NSD impact
Sent by: gpfsug-discuss-bounces at spectrumscale.org
Is it possible (albeit not advisable) to mirror LUNs that are NSD?s to
another storage array in another site basically for DR purposes? Once
it?s mirrored to a new cluster elsewhere what would be the step to get the
filesystem back up and running. I know that AFM-DR is meant for this but
in this case my client only has Standard edition and has mirroring
software purchased with the underlying disk array.
Is this even doable?
Mark
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