Can you please share the SMU screenshot of the error because as per the reply it sounds like you have mixed with you Vdisk and disks.
You must be having 1 vdisk made with 24 drives where 2 drives failed and vdisk now shows as offline.
Technically in RAID5 if two drives failed then there is no possibility of recovering the data.
However you can log a support case with HPE and they will try to recover the same. Otherwise you can contact me in private message with P2000 logs (not here in public forum) and I will try to recover as well.
Hope this helps!
Regards
Subhajit
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