Hello Tuan
At the back of the bottom controller there should be sticker with a serial no(5/6 digits). Based on that especially the first digit I can tell you what model this is. I'm guessing it's something like HUS or G series. For more information on G and F series arrays you can view information on the knowledge base here:
https://knowledge.hitachivantara.com/Documents/Storage/VSP_G130_GF350_GF370_GF700_GF900