Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
William, Lee, William Francis wrote: >> Raw throughput on the same RAID10 array, non-drbd partition: >> >> time dd if=/dev/zero of=/tmp/delete/out.file bs=1M count=5000 You're not measuring throughput. You're measuring a mixture of throughput and latency, and not that of your disk but that of your page cache. Also, you didn't give us much information about your underlying storage subsystem (SCSI or SATA, BBWC or not, disk speed & capacity, etc.). The DRBD version you are using would also be very helpful. Lee Christie wrote: > We're also building a mail cluster. Designing for around 200,000 users > and starting capacity of 5TB - a little bigger than your project. > > Mail me offlist if you want to share any strategies with regards > drbd/failover/backup/filesystem etc. You can (both of you), also go to http://www.linbit.com/en/contact/, select "DRBD Performance Tuning" and/or "Consultancy Services" and leave your contact details. :-) Cheers, Florian -- : Florian G. Haas Tel +43-1-8178292-60 : : LINBIT Information Technologies GmbH Fax +43-1-8178292-82 : : Vivenotgasse 48, A-1120 Vienna, Austria http://www.linbit.com : This e-mail is solely for use by the intended recipient(s). Information contained in this e-mail and its attachments may be confidential, privileged or copyrighted. If you are not the intended recipient you are hereby formally notified that any use, copying, disclosure or distribution of the contents of this e-mail, in whole or in part, is prohibited. Also please notify immediately the sender by return e-mail and delete this e-mail from your system. Thank you for your co-operation.