Trying to bring up a new DAS fileserver comprised of a R710 as host with a PERC H800 connected to a MD1200 with about 12TB (raw) of drives.
We currently have a Nexsan ATABoy connected to a HP fileserver over SCSIU320 which we are replacing. Currently, the ATABoy whose controller is on the disk array is configured to look like one large LUN of 4.8TB -- internally it is RAID5 over 14 spindles. We currently use that single LUN as a single PE on lvm, and use lvm to create a bunch of logical volumes which are then used as needed. Question: What is recommended? We want to have a bunch of filesystems of approximately 500 GB in size. I can see several scenarios: 1) Replicate what we have. Configure the PERC to create one huge virtual disk which is RAIDed on the PERC controller as a single physical drive to lvm. Use lvm to create logical volumes as needed 2) Use the PERC controller to make several large (>>500 GB) virtual drives and then partition each of those to create the disk lumps we want. 3) Use the PERC controller to make a large number of ~500 GB virtual drives and use them each individually. What works best? Any other ideas? Some points: Under (1), the single drive would show as /dev/sda, and we would use lvm to make that some /dev/vg1. The names of each of the volumes under /dev/vg1 is fully under our control. We could assign a sensible name to each of the volumes (e.g. /dev/vg1/source_tree instead of /dev/sda?) Under (2) or (3), the device name created by the PERC controller is somewhat hit or miss -- you know what you get, but depending of how things are reconfigured, could you not end up with a different device name? That would be a pain. I suppose one could use udev, but that seems like another set of files to maintain. Am I missing something? Thanks, Ken _______________________________________________ Linux-PowerEdge mailing list [email protected] https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq
