OMV 7 run a command at startup

Upgrade from OMV4 32 to OMV 7 64 issues

using the OMV gui scheduled tasks

I cant see an option to run a scheduled task at startup or reboot in gui

I am wanting to run two commands:

sh -c 'vbetool dpms off; read ans; vbetool dpms on' &

which should turn off my eeepcs backlight and wait for keyboard press - not perfect as only runs once

and

hdparm -S 180 /dev/sda

hdparm -S 180 /dev/sdb

to have my disks spin down when not in use.

I have gleaned that system uses apticron and not cron and cron jobs are stored in alternate place

even knowing how to add jobs outside of gui with apticron would be helpful as have ssh up and running

thanks for any help

Thanks for the suggestion - I entered each command as a seperate scheduled task as I was not sure about writing a script if it would run.

Problem 1

How to i check if it was actioned? When I rebooted the system I was sure that the backlight command was not run - nothing changed - so I presume all commands were not run.

Problem 2

I have is that the 4 drive devices sda,sdb,sdc,sdd are random - one is a card which will fail

Plus the commands do not run when I reboot the server - any advice on how to change "at reboot" - this only appeared after I had created a timed entry then I could change it to "at reboot"

I would prefer to run a script if possible?

see here:

[SOLVED|hdparm] HDDs spindown after 10 sec, ignoring hdparm -S setting / Kernel & Hardware / Arch Linux Forums

Solution was:

ACTION=="add|change", KERNEL=="sd[a-z]", ATTRS{queue/rotational}=="1", RUN+="/usr/bin/hdparm -B 128 -S 180 /dev/%k"

But being noobie I am not sure where to put this in OMV 7? The above code is from ArchLinux

Any help most welcome! Thanks.

Thanks heaps for info above - I think I tried smartmontools and it failed on usb drives connected to the laptop Im using - I run a RAID1 with 2 drives

but I will retry these now.

I still would like to be able to run a script after boot up - is there a way to change the crontabs via ssh to do this perhaps? rclocal is deprecated - I dont really want to create a special init unit to run a startup script if I dont have to.

Thanks again for the helpful suggestions above.