Equallogic ps6110xv troubleshooting

Hello Sorry for my English. Could you help with the search service tag of equallogic ps6110xv. The equipment we had in the amount of 4 pieces. But a couple of years ago, it was written off, the documents can not find them, or they create lost. Who needed confirmation that the equipment we had. This information will be used only for testing at the dell website. Thank you for your help and understanding. Email: dezarmo@gmail.com