Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
What services do you want to have in the server?, and At peak times, how many speed of write do you need? (If you don't need speed for write of blocks of disk and network, DRBD can be installed in the guest). Also you can search by Internet the benchmarks of virtio-block and virtio-net. for example: http://arstechnica.com/civis/viewtopic.php?f=16&t=34039 http://indico.cern.ch/event/45282/material/slides/1?contribId=5 http://domino.research.ibm.com/library/cyberdig.nsf/papers/0929052195DD819C85257D2300681E7B/$File/rc25482.pdf KVM, best practices: http://www-01.ibm.com/support/knowledgecenter/linuxonibm/liaat/liaatbestpractices_pdf.pdf?lang=en http://www-01.ibm.com/support/knowledgecenter/linuxonibm/liaat/liaatbpstorage.htm http://www.tdeig.ch/linux/pasche/12_BestPractices_IBM.pdf I think that you should to use LVM as block device and not as a file system for your VMs (recomended by IBM), and also use it with DRBD (in terms of performance, if DRBD is installed in the Host and not in the guest, it will be your best option). Regards Cesar ----- Original Message ----- From: Antonio Fernández Pérez To: Cesar Peschiera Cc: Joel N. Burleson-Davis ; drbd-user at lists.linbit.com Sent: Tuesday, February 17, 2015 2:51 PM Subject: Re: [DRBD-user] DRBD on virtual machine Hi list: Firstly thanks for your replies. Supposed to be worse performance using VM but, is so dramatic? Now I have a physical architecture with HA and I plan migrate these to VM with another hosting provider. I think that with RAM, CPU and storage there will be no problem ... Do you need more info? Thanks in advance. Regards, Antonio. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.linbit.com/pipermail/drbd-user/attachments/20150217/8e00d029/attachment.htm>