Hi, > - Any reason why we changed the Recovery point objective (RPO) snapshots by 15 minutes to 720 minutes in the version 5.0.0 of IBM Spectrum Scale AFM-DR?
AFM DR doesn't require RPO snapshots for replication, it is continuous replication. Unless there is a need for crash consistency snapshots (applications like databases need write ordering), RPO interval 15 minutes simply puts load on the system as they have to created and deleted for every 15 minutes. >- Can we use additional Independent Peer-snapshots to reduce the RPO interval (720 minutes) of IBM Spectrum Scale AFM-DR? Yes, command "mmpsnap --rpo" can be used to create RPO snapshots. Some users disable RPO on filesets and cron job is used to create RPO snapshots based on requirement. >- In addition to the above question, can we use these snapshots to update the new primary site after a failover occur for the most up to date snapshot? If applications can failover to live filesystem, it is not required to restore from the snapshot. Applications which needs crash consistency will restore from the latest snapshot during failover. AFM DR maintains at most 2 RPO snapshots. >- According to the documentation, we are not able to replicate Dependent filesets, but if these dependents filesets are under an existing Independent fileset. Do you see any issues/concerns with this? AFM DR doesn't support dependent filesets. Users won't be allowed to create them or convert to AFM DR fileset if they already exists. ~Venkat (vpuvv...@in.ibm.com) From: "Delmar Demarchi" <delm...@br.ibm.com> To: gpfsug-discuss@spectrumscale.org Date: 03/29/2018 07:12 PM Subject: [gpfsug-discuss] AFM-DR Questions Sent by: gpfsug-discuss-boun...@spectrumscale.org Hello experts. We have a Scale project with AFM-DR to be implemented and after read the KC documentation, we have some questions about. - Do you know any reason why we changed the Recovery point objective (RPO) snapshots by 15 to 720 minutes in the version 5.0.0 of IBM Spectrum Scale AFM-DR? - Can we use additional Independent Peer-snapshots to reduce the RPO interval (720 minutes) of IBM Spectrum Scale AFM-DR? - In addition to the above question, can we use these snapshots to update the new primary site after a failover occur for the most up to date snapshot? - According to the documentation, we are not able to replicate Dependent filesets, but if these dependents filesets are part of an existing Independent fileset. Do you see any issues/concerns with this? Thank you in advance. Delmar Demarchi .'. (delm...@br.ibm.com)_______________________________________________ gpfsug-discuss mailing list gpfsug-discuss at spectrumscale.org https://urldefense.proofpoint.com/v2/url?u=http-3A__gpfsug.org_mailman_listinfo_gpfsug-2Ddiscuss&d=DwICAg&c=jf_iaSHvJObTbx-siA1ZOg&r=92LOlNh2yLzrrGTDA7HnfF8LFr55zGxghLZtvZcZD7A&m=ERiLT5aa1e1r1QyLkokJhA1Q5frqqgQ-g90JT0MGQvQ&s=KVjGaS1dG0luvtm0yh4rBpKNbUquTGuf2FSmaNBIOIM&e=
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