Hi

Not sure I am on the right topic. I am testing 2 unraid servers. Both of them are running a trial key.

Server A: as 19/20 disk connected in  different ways. (Onboard sata, sata pci controller, etc)

Server B: as 21/24 disks connected with a SAS controller.

Now on boot up the system sees all the drives properly on each system. However inside unraid it seems it only sees 12  disks on each server 

I tried moving the disks around and even a new configuration.

Is there a way to scan for new devices?

 

Also another thing I am having is that if I get a drive that is disabled by unraid .  how do I re-enable it ?

 

 

Go to Tools-diagnostics and attach the complete Diagnostics zip file to your next post. 

Hi i sent you a PM with the attached logs. 

1 hour ago, adeazevedo said:

Hi i sent you a PM with the attached logs. 

The diagnostics are anonomysied so there is little risk in listing them to the forum and you will get more eyes on them.    Using a PM is normally frowned on if not specifically requested.

I see.. ok here they are 

 

tower-diagnostics-20190726-1515.zip staccato1-diagnostics-20190726-1509.zip

On the staccato1 server, most of your shares are incorrectly set to cache-prefer, and your cache disk is already full.

 

Study this FAQ carefully:

 

https://forums.unraid.net/topic/46802-faq-for-unraid-v6/page/2/#comment-537383

 

 

As for the disks, are you sure you have enough power for that many disks? Why do you want so many small disks anyway? Fewer larger disks can provide the same capacity, better performance, take less power and fewer ports, and perhaps most importantly, fewer disks means fewer points of failure.

 

Thank you for the information this fixed my cache question. 

for the horse power yes the server have plenty of power . the reason for the disk its because the idea is to have Server A for important stuff that has newer disk. Server is for lab and testing we recycle all the disks we have around to re-purpose them. Also server B as the most power for docker apps and vm so it a perfect test bench . 

 

as for the disk detected ... do we have a command or a way to scan for disk? . i installed  the plugin disk location and  we noticed on both server the last 2 rows are not being detected... could it be a limitation of the trial ? 

 

There is no disk limitation in the trial.    There is also no command to scan for disks as this is done automatically during the boot process.

 

the only time I have heard of a limitation like you seem to be experiencing was when it was a limitation in the BIOS.    You implied, however, that all drives are showing up at the BIOS level?

ok.. well if there is no limitation i will triple check my wires and bios disk detected.  its perhaps something i overlooked. i just wanted to be sure its not software related... however i am curious ... If its detected at boot up this means if we hot swap a disk we need to reboot its good to know. 

 

I will check the wires and report back ... thank you for the help

 

28 minutes ago, adeazevedo said:

If its detected at boot up this means if we hot swap a disk we need to reboot

If your hardware supports it, then probably a disk attached after boot will be detected. But there isn't really any hotswap functionality like you may be thinking. You have to stop the array and change the disk assignments before Unraid will try to rebuild to a replacement disk.

 

26 minutes ago, adeazevedo said:

If its detected at boot up this means if we hot swap a disk we need to reboot its good to know. 

The Linux kernel used by Unraid supports detecting hot swap drives but Unraid does not for array drives.   You may not need to reboot to swap an array disk but you would certainly need to stop the array. 

 

The Unassigned Devices (UD) plugin used with drives not in the array does seem to handle hot swap of drives.

Hi,

wanted to give you a quick update. i had a bad controller card that why not all the drives where not detected. We are all set now. 

i was curious about one last thing . i was ready about recovering specific files . i found this 

 

Do you know if  down the road in the new version we would have some plugin or feature that we could do snapshots of folders ? I also read some type of recycle bin ..

41 minutes ago, adeazevedo said:

Hi,

wanted to give you a quick update. i had a bad controller card that why not all the drives where not detected. We are all set now. 

i was curious about one last thing . i was ready about recovering specific files . i found this 

 

Do you know if  down the road in the new version we would have some plugin or feature that we could do snapshots of folders ? I also read some type of recycle bin ..

That post dates from the days when Unraid was only using ReiserFS as the supported file system.   The reiserfsck tool was legendary for its capability to recover from even severe corruption and for finding deleted files.  Unfortunately for a number of reasons reiserfs is now deprecated and the 'fsck' type tools for XFS and BTRFS are not as good.

 

Their is a plugin that can activate a recycle bin capability at the samba level.   While that works fine it only handles files that are deleted by samba (i.e. over the network).  if you want in then install it via the Apps tab.

thank you for the great help