gordongraham

The addon SNAP looks like exactly what I have been looking for, however reading through im not sure on how to set it up to do what I need. Im not particularly literate with linux im afraid. Can anyone help, even if its to point me in the right direction? I have a 7TB array running unraid stable, about 9 months old. Its in an HP N40L microserver chassis. I have samba shares set up ie /Movies/HD/, /Movies/SD/, /TV/ etc. Set to automatically fill and span free space so each of the storage drives fills up evenly. I want to be able to copy files onto my NTFS USB Flash at work, making sure that I use the same folder structure (ie /Movies/SD/abc.mkv) then plug it into the unraid box at home and have the contents automatically download to the correct share. Apologies if this is a little unclear, or if I have got the wrong end of the stick about whether this is actually possible. TY

Hi - this looks like exactly what I have been looking for, however reading through im not sure on how to set it up to do what I need. Im not particularly literate with linux im afraid. Can anyone help, even if its to point me in the right direction? I have a 7TB array running unraid stable, about 9 months old. Its in an HP N40L microserver chassis. I have samba shares set up ie /Movies/HD/, /Movies/SD/, /TV/ etc. Set to automatically fill and span free space so each of the storage drives fills up evenly. I want to be able to copy files onto my NTFS USB Flash at work, making sure that I use the same folder structure (ie /Movies/SD/abc.mkv) then plug it into the unraid box at home and have the contents automatically download to the correct share. Apologies if this is a little unclear, or if I have got the wrong end of the stick about whether this is actually possible. Cheers Gordon

There are plenty of threads with average speeds covering many different setups. From what I understand, adding a cache drive only benefits xfer speed by delaying the parity calculation until later (default 3:40am when the array is less likely to be in active use). Since you're not currently running a parity drive I doubt adding a cache drive for your current setup would show any improvement. Im going to double check that all my cables are at least cat5e tonight. Im pretty sure they are, but just another thing to rule out. Writing to the server at 25MB/s isnt brutally slow, but it pains me that I should be able to get higher with my current hardware!

One of the disks in my array (disk 4) sometimes takes multiple attempts to spin down. The rest do so no problem. The usual "click" when spin down is successful (all my disks make this sound) happens over and over until it succeeds. Spin-up groups are already disabled. Should I be worried and make steps to swap the disk out? Any advice appreciated. Running 4.7 and Syslog attached. log3.txt

I did those two things, ran "netsh int tcp set global autotuninglevel=disabled" and disabled flow control. Neither seems to have had any positive effect on my xfer speeds. Still maxing out at 25MB/s write, 50MB/s read. Im guessing there must be some other bottleneck in my setup. Cache drive is 80GB 7200rpm WD, both ends gigabit NIC, running through a gigabit router, cat5e cables throughout. Anyone any thoughts on how to test where the bottleneck is?

Sorry for the threadjack OP, but I recently disabled the remote differential compression in Win 7 which (seems to have) fixed an error I was having where any transfer would hang on "calculating" the first time it was initiated. Nick, can you clarify what you mean with your second two points above? ie where would the command be run (set in go script in unraid?) and also, which NIC did you disable flow control, unraid or Win7 machine and how? I am running an HP Microserver N40L (4.7 Stable, 2GB RAM) and a Win 7 box, all now through gigabit and struggling to reach above 25MB/s even with a 7200rpm cache drive in use. Wondering if maybe any tweaks could speed it up. Jumbo frames are not an option at the moment as the NIC in the HP doesnt support them and im not keen enough to put in a new NIC at present!

Hi Rob, thanks for your reply. I am running through an older router so although both ends have a gigabit NIC, the integrated 10/100 switch in the router is a bottleneck. New router on its way. I have had little joy solving the "calculating" problem. It still happens with almost every transfer. I suspect it may be a driver issue with my PC's D-Link Gbit NIC. Ill try a different driver and see if that fixes things.

Second syslog attached. syslog2.txt

Can anyone have a quick look at the syslog and tell me if its complete? I have looked at a recent one also and cant see any entries for copy/move operations. I suspect im getting the wrong one from //myserver/log/syslog Thanks

Hi John, thanks for the reply. I have now attached the syslog, though it seems to me that it only includes very few entries - the 2 timestamps dont seem to cover much ground. Have I done something wrong? A copy directly to a disk share failed this morning at around 8:20 (roughly), right before I copied the text from the syslog, so i assumed that would be included but I cant see it. The drives are usually asleep when copy/move initiates but seem to wake fine. The failed "calculating" dialog appears sometimes even if all drives are manually spun up directly beforehand. The box has a static ip reserved in the router so shouldn't change - I have checked this from time to time and it does seem to stick so I doubt DHCP timeout is the problem. I am on Windows 7, not Vista. If i retry the copy/move straight away after the failure, it does work.

Hi I have recently put together a fileserver using Unraid 4.7 Plus as the OS. It is an HP Microserver N40L with 2GB RAM, populated with 5 drives (3 x 2TB, 1 x 1.5TB, 1 x 1TB Samsungs, one of the 2TBs is parity). Everything works great, all my data copied over fine initially writing large chunks manually to each of the 4 disk shares. I set up 2 user shares, each exported to read/write (one Movies, one TV). Sometimes I can copy files directly into the user shares without any problem, and sometimes it just hangs at "calculating" and times out after about 60 secs with something like "//myserver cannot be found, please check it is connected to the network" (I am at work just now, so cant remember this message verbatim). It is random when it happens too, ie not just with large transfers. It happens to both the tv and movies user shares (split level 2 for each, dont know if thats relevant). It also seems to be irrelevant whether or not the disks are spun up at the time transfer initiated. After the transfer fails, the web ui is still visible, shares still accessible, all seems perfectly connected and working as normal. Each disk has at least 400GB free space. I have tried rebooting both ends, same result. I googled for a solution, but couldnt find much. One forum post from 2007 suggested it could be because writing to a user share essentially copies to RAM first and then to the array, but I couldnt see how this would still be the case, if it ever was. Any thoughts would be much appreciated. If you need any further info let me know. I will grab a copy of the syslog and include it here this evening. Cheers Gordon syslog.txt