Infortrend / Toshiba 2TB 3.5 inch SAS 6Gb/s HDD 7200RPM Hard Drive HDD3A01 Model: MK2001TRKB, Part #: HDD3A01TZK51
- Brand: Toshiba
- Part #: HDD3A01TZK51
- Model: MK2001TRKB, HDD3A01
- Firmware: 1001
- Specs:-
- ::Type: Toshiba / Infotrend co-branded Internal Hard Disk Drive
- ::Capacity: 2 TB (2000 GB)
- ::Interface: SAS (Serial Attached SCSI) - specifically 6 Gb/s SAS-2
- ::Form Factor: 3.5 inches ((Standard internal desktop/server size)
- ::Spindle Speed (RPM): 7,200 RPM
- Format bit size: 512 emulation (512e) format
- ::Cache Buffer: 16 MB
- Compatibility:
- ::The drive is compatible with any system that uses SAS drive trays and any SAS controller.
- Condition: New pull; excess demo kits from a DC
- Warranty: 1 (one) year Tekmart Africa warranty
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INT061225CJH2025
**Eligible for immediate collection / shipping upon order confirmation*
The SKU:HDD3A01TZK51 is a part number for a Toshiba Enterprise Hard Disk Drive (HDD)
They are often cross-referenced with the MK2001TRKB Marketing Part Number (MPN).
These MKx001TRKB and MKx002TSKB series hard disk drives (HDDs) feature high storage capacities, enterprise-class reliability, enhanced power condition state technology, and performance efficiencies which are critical to business operations.
They are designed to support enterprise applications where reliability, high capacity, and performance are required. Specific applications include SAN, NAS, DAS, cloud storage, data centers, entry level servers and tiered storage system architecture.
Typical application cases include usage in interprise applications, such as servers, cloud storage, data centers, SAN, NAS, and DAS, due to their reliability features like Rotational Vibration (RV) technology and a high Mean Time Between Failures (MTBF) of 1,200,000 hours.
Since each drive is a 512 emulation (512e) format, it then means they operate with two different sector sizes, namely:
1. Logical Sector Size (Format Bit Size): 512 Bytes
- This is the block size the drive reports to the host operating system (OS) or controller. It's used for compatibility with older systems and applications that were designed for traditional 512-byte sectors.
2. Physical Sector Size: 4,096 Bytes (4 KB)
- This is the actual, physical size of the data blocks written to the disk platter. This larger size is part of Advanced Format (AF) technology, which improves storage efficiency and error correction.
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The 512e designation (sometimes also called "Advanced Format") is a translation layer managed by the drive's internal firmware.
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::Read Process: When the host OS requests a 512-byte block, the drive must read the entire 4 KB physical sector into its cache. The firmware then extracts the requested 512 bytes and sends it to the host.
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::Write Process: Writing a 512-byte block requires a "Read-Modify-Write" cycle:
- ::The drive Reads the entire 4 KB physical sector into cache.
- ::The firmware Modifies the data for the specific 512-byte logical sector.
- ::The drive Writes the entire 4 KB physical sector back to the disk.
This translation ensures backward compatibility but requires proper partition alignment by the operating system or RAID controller to prevent performance degradation from excessive Read-Modify-Write cycles.
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