5230 has same capacity options as NetBackup 5220
5230 has same form factor & expansion shelf (2U+3U+3U)
5230 has 12 compute cores, 5220 has 8 cores
64 or 128GB RAM on 5230, 48 or 96GB RAM on 5220
Broader I/O configurations on 5230.
2 10Gb Ethernet standard on each 5230 option
5 PCI-e slots available for I/O on 5230 versus 4 on 5220