HK-Steve

I have a disk problem on Tower2 also, Looks like johnnie.black nailed it... Awesome. Much appreciated

Thanks, were turned on, but once a week. Modified the settings. Much appreciated.

Once again johnnie.black, You are AWESOME, Thanks. I did not get any error notification, But I just went to the logs and I do see that error. Should have gone there myself first, Sorry...... Lesson learned. And learning every day. Much appreciated.

Would I see that as Smart error?? Or would that be a cable issue?

Hmm, I do not see that error.

Hi Everyone, Had some interesting behaviour after adding more RAM, My Parity check halved it's speed or worse. My Tower3 had 1x 16Gb of RAM, added 1x stick of 16Gb of the same model and brand, was seen properly in bios and UnRaid. But my Parity check went from about 110Mb/s, went to 70mb's... I removed the 16Gb of RAM, Parity check went back to 110Mb/s My Tower2 had 1x 8Gb of RAM, added 1x stick of 8gb of exactly the same model and brand, was seen properly in bios and UnRaid. But my Parity check went from about 80Mb/s, went to 3mb's... I removed the 8Gb of RAM, Parity check went back to 80Mb/s Did I miss something when I added the RAM, configuration?? Do I need to do anything other than adding the RAM stick to the motherboard and boot into UnRaid? The Diagnostic is from my Tower3 while running the Parity check with the 32Gb of Ram installed. Appreciate your always valuable advice tower3-diagnostics-20190623-0849.zip

Thanks, No I do not access outside my home network, I learned something today. Much appreciated.

Thanks, think I will backup my other 2x Towers later today, just never know. Normally I do a backup after I have added disks or controllers. Much appreciated the help. Cheers

Thanks, I did know that, as I had a USB stick fail about a year ago, and went through the process, all of which was not that painful. I had an original USB that I bought, when UnRaid sold the software already installed on a USB stick, yes that was a LONG time ago. Any idea as to why I had the problem?

Thanks

OK, So this morning I change to my Tower1 USB stick and it booted. Replaced my original power supply, Booted with the Tower1 USB Stick. Looked at my Tower2 USB on my Windows 10 computer and all seemed there, compaired USB to the backup I have, looked identical. So I copied the backup to the Tower2 USB Stick. Put it back into my Tower2 and it booted... Powered down and connected all the power and sata cables. It booted and mounted all the drives when I started the array. Hmmm, So what do you think caused this?? And DID I do the right thing in copying the backup to the USB stick? Appreciate the advice.

I think that my Towers are unsecure, as I don't have to use a password. How can I make them secure?

OK, I disconnected all hard drives from the LSI's and Power from them. Love modular PSU's with cable connections.. Same, did not boot after post beep. So Next will remove the LSI controllers. Just not had the time today to mess properly, but monday can install Friends MB and see what happens with itimpi's strategy. Appreciate the help and advice, Thanks

Thanks Guy's, I have just changed the power supply to a brand new Corsair 850watt I had for my Friends Tower. Unfortunately it still does not boot. Next I will disconnect all the hard drives and just boot with the UnRaid USB stick. Agree?

I have a new Motherboard, CPU and RAM exactly the same, a Spare, If you can call it that....is for a Friend but can use if needed. He will not mind 😀 What should I do now. Parity was checked 2 days ago. with no errors. I can pull the UnRaid USB Stick but what should I look for?? Much appreciated

Hi Everyone, came home to my Tower2 offline. Running 6.7.0. Has been running for about 2 years with no issues or changes other than UnRaid OS. Have 22x 2Tb hard drives, 2x parity. Running 3x LSI 9211-8i's flashed to IT. I rebooted and got the single post beep, then nothing at all, no video output from hdmi or DVI output.. Gigabyte Z370 HD3-CF Motherboard, not using onboard sata ports. Intel® Core™ i3-8100 CPU @ 3.60GHz 8Gb of DDR4 RAM 850watt PSU Corsair. Is on a UPS so I do not suspect a power dropout or spike. Not sure what to do next. Appreciate your help. Cheers

Curious, 😎

Transfer speeds stayed the same, just over 110Mb/s

Will let you know what the transfer speeds are like after parity check is finished. Thanks

Thanks Benson, Well after reading many many threads here, I found a post by johnnie.black with the tuneable setting for disks. I changed to the suggested and BAM, parity check speed went straight to 168Mb/s which is awesome from the original 71Mb/s.. Settings -> Disk Settings Tunable (md_num_stripes): 4096 Tunable (md_sync_window): 2048 Tunable (md_sync_thresh): 2000 Thanks to you Both. Much appreciated

Benson, could you list your hardware? Would be nice to see what makes yours that fast.. Will do for the pci-e when I get time later this week. Much appreciated.

Thanks Benson, I did kind of leave the question open ended. Sorry. I currently have 3x Towers, My new Tower 3 has 12x 8Tb hard drives with 2x 9207-8i's, 2x parity and 10x data drives. This is the reason for the question.. My Tower 2 has 24x 2Tb drives. 2x SuperMicro and 1x LSI 9211-8i's, 2x parity. yes need to replace the SuperMicro.. My Tower 1 has 24x 2Tb drives. 3x LSI 9211-8i's with 2x parity. My new Tower 3 is the reason for the question, Tower 1 and 2 are doing really well with a parity check about 70Mb/s, older motherboards and older hard drives. Tower 3 is about the same speed with newer CPU, RAM and Motherboard, Thought it would be faster, as it is also about 70Mb/s parity check. Hope that helps and appreciate your thoughts.

Hi Everyone, I was messing with my Towers and saw that I have only 1x pci-e slot at 16x speed. 3 pci-e slots on the motherboard. With 2x SAS controllers installed speed goes down to 4x speed per slot. I have 2x 9207-8i's installed, So would the 4x speed instead of 8x speed for the SAS controllers on the bus, be slower because of this?? Parity checks would be slower, data transfers, etc. Talking about real world not hypothetical, which would mean a new motherboard for me, but worth it as the 9207's are new to replace the SuperMicro controllers. Much appreciated Steve

Thanks jonathanm, I understand how parity works, that is why I have used UnRaid for over 10 years+ now. I am just not an expert user as many of You are. Thanks. Was concerned that after adding about 5Tb total to 6 or 7 disks, that I should do a Parity check now before making hardware changes, or after for a more reliable controller. I have started a parity check on both Towers now. Thanks again. Much appreciated as always.

Thanks to you both, Much appreciated. I do have a screenshot of disk assignments, anytime I add a disk, I take a screenshot and print it. Sticky tape it inside the side cover. I also use a labelling machine for the last 4 digits of serial number. Easy to know which disk is which. Think I will do a parity tonight, before I disturb anything, then do the changes. Thanks for the confirmation that either way works.