HPE Dual Port Enterprise - Hard drive - 900 GB - hot-swap - 2.5" SFF - SAS, P/N 652589R-B21 HP Serial Attached SCSI (SAS) Dual Port Enterprise hard drives deliver high performance solutions for hosting high transaction based applications. The SAS interface was designed and engineered for high availability, enterprise-class data storage where performance, reliability and data integrity are crucial. Performance and reliability for multiple application environments High availability for business critical applications Robust SAS interface (dual port, full duplex) Ideal for transaction processing, database applications, analytics, high performance computing and business applications