Amazon.com: HP 653950-001 146GB hot-plug dual-port SAS hard disk drive - 15,000 RPM, 6Gb/sec transfer rate, 2.5-inch small form factor (SFF), Enterprise, SmartDrive Carrier (SC) - Not for use in MSA products :
Form Factors of hard disk drive - Data Recovery Salon
Amazon.com: HP 695842-001 4TB SAS Hard Drive Disk (HDD) - 7,200 RPM, 3.5-inch form factor, SmartDrive Carier (SC), Midline (MDL), 6Gb per second Transfer Rate (TR) : Electronics