HP Enterprise Hard Disk Drive 653953-001 500 GB Dual SAS 7200 RPM 2.5" HDDHP Enterprise Hard Disk Drive 500 GB Dual SAS 7,200 RPM, 653953 001, 2. 5", 500 GB, 7200 RPM 500GB SAS hard drive with dual port 7,200 RPM, 6 Gb s transfer, 2. 5 inch small form factor (SFF), Midline, SmartDrive Carrier (SC) Not for use in MSA products Replacement disk qualification procedure During spare parts order fulfillment, customers may receive a hard drive that differs from their original. Replacement devices are necessary because older