Vinicius, tenta o comando " smbiosDump |grep -A 12 'Memory Device' " através de uma sessão SSH em seu host, e a saída será algo similar a saída abaixo:
[root@esxihosta:~] smbiosDump |grep -A 12 'Memory Device'
Memory Device: #11
Location: "DIMM01"
Bank: "BANK01"
Memory Array: #9
Form Factor: 0x02 (Unknown)
Type: 0x02 (Unknown)
Type Detail: 0x0004 (Unknown)
Data Width: 0 bits
Size: No Memory Installed
Memory Device: #13
Location: "DIMM02"
Bank: "BANK02"
Manufacturer: "Elpida"
Serial: "8A56272B"
Asset Tag: "Unknown"
Part Number: "EBJ41HE4BDFA-DJ-F"
Memory Array: #9
Form Factor: 0x09 (DIMM)
Type: 0x01 (Other)
Type Detail: 0x0004 (Unknown)
Data Width: 64 bits (+8 ECC bits)
Size: 4 GB