For performance reasons stay with powers of 2 for k. Any of 2+2 or 4+2 will work with your set-up and tolerate one (!) host failure with continued RW access and two host failures with RO (!) access. To tolerate 2 host failures with RW access, you need m=3, which is probably a bit much with 6 hosts. Best regards, ================= Frank Schilder AIT Risø Campus Bygning 109, rum S14 ________________________________________ From: Szabo, Istvan (Agoda) <Istvan.Szabo@agoda.com> Sent: 10 May 2021 10:35:34 To: ceph-users Subject: [ceph-users] Which EC-code for 6 servers? Hi, Thinking to have 2:2 so I can tolerate 2 hosts loss, but if I just want to tolerate 1 host loss, which one better, 3:2 or 4:1? Istvan Szabo Senior Infrastructure Engineer --------------------------------------------------- Agoda Services Co., Ltd. e: istvan.szabo@agoda.com<mailto:istvan.szabo@agoda.com> --------------------------------------------------- ________________________________ This message is confidential and is for the sole use of the intended recipient(s). It may also be privileged or otherwise protected by copyright or other legal rules. If you have received it by mistake please let us know by reply email and delete it from your system. It is prohibited to copy this message or disclose its content to anyone. Any confidentiality or privilege is not waived or lost by any mistaken delivery or unauthorized disclosure of the message. All messages sent to and from Agoda may be monitored to ensure compliance with company policies, to protect the company's interests and to remove potential malware. Electronic messages may be intercepted, amended, lost or deleted, or contain viruses. _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-leave@ceph.io