As a complete network security system, NSAS has an exact demand to the memory space of computer. The system adopts double SCSI hard-disk interface and multiple-hard-disk circulating memory to guarantee the auditing work. 作为一个完整的网络安全系统,对存储空间的要求非常苛刻,本系统采用双SCSI硬盘接口,多硬盘循环存储的机制来保证审计工作的运作。