SimonAG

I bought one of those plugin dust air blowers and clean the case out twice a year now and my temps are looking perfect since 6.12.6 and in winter I can even remove the front fans now if I wanted to, which looks a lot better. Still planning on moving to a new case at some point.

Is there any way to make the files while they are still on the cache writeable? If I download something and then want to remove it, I can't delete it until it has been synced to the main array. Is there a way to change the permissions on the cache drive so that I can delete through SMB?

2023 update on my build Unraid Logic Case SC-43400-8HS Gigabyte GA-Z87X-UD4H Intel 4670k 3.8ghz 8GB corsair unbuffered 8 Port SilverStone ECS04 3x 12TB SEAGATE 5x 6TB SEAGATE 550W Seasonic Focus Gold PSU 2x 140mm fan 1x 512gb cache drive Pfsense in-Win IW-RF100 Supermicro A2SDi-4C-HLN4F 4gb 2133mhz Unbuffered 60gb SSD TPLINK EAP660HD 8 port netgear switch UPS Cyberpower 780w Interesting to see the entire setup including another windows media pc, vero 4k, my LG CX and the unraid nas only uses 110watts at idle.

I finally bought a 512gb SSD for a cache drive cost me £25 and I couldn't believe how much it allowed for my main array to not be spun up and reduced disk temperatures of the array overall.

I did it I live another day.

You can understand my hesitancy though? the button is in the same list as the start stop array etc.

I can see it shows format will create a file system in all unmountable disks and then shows the new cache drive on the left side as the only disk. When I click are you sure box it warns me it is going to wipe the disk etc. I just want to be sure this is not going to touch the main array, I don't think it will but I don't think it is clear enough for me to just do it without posting this for confirmation. Its only going to format the cache right and is there any other way I can format the disk, like with the array unmounted and just that disk selected?

OK thanks, sorry for being blind and doing no research on this one. Seems like I might have a justification to add a cache SSD now though.

Am I correct in saying that there are no system logs prior to a reboot? Is there an app I can use to backup syslog across the network then? I had a weird power cut and not sure what my UPS did and wanted to investigate the cause but it seems the logs start at the current boot up time. Alternatively if the system logs could be copied to persistent storage that could help to solve it as well, is that possible. I could keep a copy on the main array.

Adding one more array would be a great addition because would allow for different controller on the same Pc to manage the drives. After 1 or 2 arrays is not realy feasible. The cache is useflul but having a few more arrays would be even more useful. I like unraid in how the data sits on the disks compared to zfs.

At the moment my main array is done through the pcie HBA connector but it would be possible to add more sata disks or pcie disks using ssd now that they are coming down in price. Is adding a second array on the roadmap or will that never happen in unraid?

There was some bad firmware that caused slow disks years ago on HP controller. https://community.hpe.com/t5/ProLiant-Servers-ML-DL-SL/Smart-Array-P420i-extremely-slow-writes/td-p/6497596 Might be the cause, try in MC over ssh between disks, that should cut out network as the cause.

Does it always throw up a parity check when there is an unclean shut down? Is that just a precaution or is there something that happens on a clean shutdown that makes parity integrity better?

By mistake I turned off the mains power and my unraid lost power and rebooted afterwards and started up without issue. When I started the array it kicked off a parity check, I only just parity checked a few weeks ago as done some new drives and with the weather being hot at the moment, it is not ideal for me to run a parity check. I did cancel the parity check, am I taking a big risk there? There was no writing to data drives going on when the power cut and all the data is fine.

never mind, I see you use the scheduling to add the cron for you...