IBM 3TB 7.2K RPM 3.5″ NL SAS HDD Technical Datasheet

Product Identification

Brand / Vendor: IBM Corporation
Original Equipment Manufacturer (OEM): Seagate Technology LLC
Seagate Base Model: ST33000650SS
Seagate Part Number (P/N): 9SM260-039
IBM Part Number (P/N): 90Y8731
IBM Feature Code (FC): 5433 / 5843 (Varies based on targeted machine type enclosure like DCS3700 or System x)
Product Class: Constellation ES.2 (Enterprise Storage Generation 2 Nearline)

Form Factor: 3.5-inch Large Form Factor (LFF)
Formatted Capacity: 3 TB (3,000 GB)
Rotational Spindle Speed: 7,200 RPM
Interface Port Type: Dual-Port Serial Attached SCSI (SAS) 6Gb/s
On-Board Data Buffer: 64 MB
Sector Architecture: Native 512 Bytes per Sector (512n)
Deployment Configuration: Hot-Swappable (Typically shipped on an IBM System x or DCS3700 storage subsystem drive tray assembly)

Optimized for high-density bulk nearline enterprise tiers, balancing massive volume capacity with mission-critical multi-drive RAID stability:

Performance Metric	Rated Specification
Interface Port Transfer Speed	6.0 Gbps (Backward compatible with 3.0 Gbps SAS host controllers)
Sustained Data Transfer Rate	Up to 155 MB/s
Average Latency Time	4.16 ms
Average Seek Time (Read Typical)	8.5 ms
Average Seek Time (Write Typical)	9.5 ms

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