Here are my notes on presenting a LUN from a 3PAR 7400 SAN to a Hyper-V 2012 server running no GUI. The SAN is connected to the server via Fiber. There is a FC switch in between which has been properly configure, zoned, etc. Multiple paths to the same LUNs are configured for redundancy and speed so we need MPIO.<\/p>\n
Procedure:<\/strong><\/p>\n 1. Install MPIO feature and reboot the Hyper-V server<\/p>\n Note that I did not run the mpiocpl GUI or the mpclaim command as I described here<\/a> earlier. You may have to do that.<\/p>\n 2. From\u00a0 inside the SAN management console, present a LUN to the Hyper-V server.<\/p>\n Note: while creating the volume\/LUN make sure to check the size against the \u201cChunklet Calc\u201d worksheet inside this spreadsheet \u2013 \u201c3PAR Design Spreadsheet v2<\/a>\u201d so that\u00a0 no chunklets are stranded. For example, it is better to have a 504 GB LUN than a 500 GB LUN. A 10 GB LUN wastes 6 GB space! A 16 GB LUN wastes nothing. So you\u00a0 have to play around with the numbers in the spreadsheet.<\/p>\n 3. At this point you have two options \u2013 use GUI disk management tool from a remote client machine running Windows 8 OR on Hyper-V server itself run these commands:<\/p>\n diskpart<\/p>\n DISKPART>list disk (You may see your disk listed but if not run a rescan command)<\/p>\n DISKPART>rescan<\/p>\n DISKPART>list disk (Now you should see your new disk listed but it probably is offline)<\/p>\n DISKPART>list volume (this shows all your current volumes and their drive letters)<\/p>\n DISKPART>Select disk 1<\/p>\n DISKPART>online disk<\/p>\n DISKPART>detail disk (this will give you detailed info)<\/p>\n DISKPART>attributes disk clear readonly<\/p>\n DISKPART>clean<\/p>\n DISKPART>convert mbr<\/p>\n DISKPART>create partition primary<\/p>\n DISKPART>select part 1<\/p>\n DISKPART>format fs=ntfs label=SANtest quick<\/p>\n DISKPART>assign letter E<\/p>\n DISKPART>list volume (you should see the new volume\u00a0 now)<\/p><\/blockquote>\n <\/p>\n Full diskpart syntax can be seen here<\/a><\/p>\n