I’d be interested to know what the actual throughput is you are getting.
Are the disks SATA 7200RPM? What speed is the disk interface?
Do you have just 2 disks or more?
Richard
[Richard Mackerras - Chat @
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In your script put a few commands outputting to a check file
pwd > /tmp/checkfile
Add a few more like
ENV >> /tmp/checkfile
Just to make sure it really is in the directory you expect with the environment
you expect.
If you want it to be run as you never use the root crontab unless you want