Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Hi! I'm thinking about a DRBD Installation for one of our sites. The hardware are two identical Sandybridge-Xeon boxes with a dedicated, direct connection between for DRBD. We're booting of a SSD. Harddisks are connected by onboard-SATA 6G. OS is Debian Squeeze using DRBD 3.8.10. Unfortunatly there's just one 3.5" drive bay available for storage so raid is not really an option (perhaps using 2 2.5" HDDs mounted with a 2x2.5 to 1x3.5 mounting bracket, but I'm afraid of this setup getting too hot despite active cooling in the rack.) So as far as i can see, there are four options available: 1.) a single SATA-Disk, internal metadata: Played around with that while getting familar with DRBD, lousy performance near to unusable. 2.) a single SATA-Disk, external metadata on a partition of the Boot-SSD. Any experiences on performance using a setup like this? 3.) a single SATA SSD, internal metadata: I've read about DRBD not supporting TRIM, so I'm afraid the SSD will not work at full performance and perhaps die too fast. 4.) a single SATA-Disk, connected to a 3Ware 9650SE Raidcontroller, using a BBU. Never tried a controller like this with just one disk. How much RAM do I need on that controller? Is 128MB sufficient (and I know that the more the better, but how much do we really need?)? 4a.) two 2.5" SATA Disks, mounted in one 3.5" bay using a 9650SE as well. As said before I'm afraid of getting the HDDs too hot. Personally I would prefer variant 2 or 3, but I'm not shure about performance using these setups. So, what do you think about that options? regards, Lukas -- -------------------------- software security networks Lukas Gradl <proxmox#ssn.at> Eduard-Bodem-Gasse 6 A - 6020 Innsbruck Tel: +43-512-214040-0 Fax: +43-512-214040-21 --------------------------