You just have to physically remove the drive from the slot. Half of the slot or bay is enough. Give 1min and then put it back.
Then check in CLI and SMU about the state of the drive.
As you have mentioned this drive looks fine in other system so I would suggest you to try power cycle of the MSA before you go for Chassis replacement.
Regarding Chassis replacement, you should have everything intact. Only there may be chance of losing mapping information. All vdisk and volumes information available and saved in drive metadata. As there is no controller getting replaced then all should be fine. You can anyway capture MSA log before go for any kind of replacement activity.
Hope this helps!
Regards
Subhajit
I am an HPE employee
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