Sorry guys, I'm maybe a little bit late. !!
from storage:
fas3140> environment shelf
And the best, using a linux
#ssh root@10.10.20.100 environment shelf | grep -i 'Product Serial Number:'
Product Serial Number: SHJ00xxxxxxxxxx
Product Serial Number: SHJ00xxxxxxxxxx
Product Serial Number: SHJ00xxxxxxxxxx
Product Serial Number: SHJ00xxxxxxxxxx
Product Serial Number: SHJ00xxxxxxxxxx
Product Serial Number: SHU0xxxxxxxxxx
Product Serial Number: SHU0xxxxxxxxxx
Product Serial Number: SHJ00xxxxxxxxxx
Product Serial Number: SHJ00xxxxxxxxxx
Product Serial Number: SHJ00xxxxxxxxxx
Product Serial Number: SHJ00xxxxxxxxxx
Product Serial Number: SHJ00xxxxxxxxxx
Product Serial Number: 60xxxxxxxxxx
Product Serial Number: 60xxxxxxxxxx
Product Serial Number: 60xxxxxxxxxx
Product Serial Number: 60xxxxxxxxxx
Product Serial Number: SHFMSxxxxxxxxxx
Product Serial Number: SHFMSxxxxxxxxxx
Product Serial Number: SHFMSxxxxxxxxxx
Product Serial Number: SHFMSxxxxxxxxxx
I hope that it will prove useful
Best regards