HPE 10TB SAS 12Gb/s Midline 7200RPM Hot-Swap Hard Drive — 857644-B21

The HPE 857644-B21 is a 10TB SAS 12Gb/s midline 7200RPM hard drive in 3.5-inch LFF form factor, including HPE Smart Carrier, and validated for HPE ProLiant Gen8, Gen9, and Gen10 servers. As the option kit part number, it is the standard procurement version of this digitally signed nearline drive for ProLiant capacity storage deployments.

Key Features

• 10TB SAS 12Gb/s option kit — standard procurement version for ProLiant nearline storage
• Digitally signed HPE firmware for seamless Smart Array controller compatibility
• 3.5-inch LFF hot-swap form factor with Smart Carrier for tool-less bay installation
• 512e sector format compatible with HPE ProLiant Gen8 through Gen10 storage controllers

Product Specifications

• Part Number: 857644-B21
• Manufacturer: HPE
• Capacity: 10TB
• Interface: SAS 12Gb/s
• Form Factor: 3.5-inch LFF Hot-Swap
• Spindle Speed: 7200RPM
• Sector Size: 512e
• Carrier: HPE Smart Carrier included

Storage Specifications

• Drive Type: Midline HDD (nearline-class)
• Interface Speed: 12Gb/s SAS (dual-port)
• Sector Format: 512e (512-byte emulation)
• Hot-Swap: Yes — Smart Carrier for non-disruptive replacement
• Digital Signing: HPE firmware-authenticated for ProLiant Smart Array controllers

Performance Specifications

• Rotational Speed: 7200RPM for midline capacity workloads
• Workload Rating: Nearline/midline — optimized for sequential and capacity-heavy I/O
• Cache: On-board drive cache for read/write buffering (drive-model dependent)

Use Cases

• Primary procurement option for HPE ProLiant Gen8/Gen9/Gen10 nearline storage builds
• High-capacity archive and backup storage in LFF ProLiant chassis bays
• Bulk data storage tiers in tiered storage architectures alongside SSD primary tiers
• RAID array capacity expansion using 10TB SAS midline drives

Compatibility

• HPE ProLiant DL380 Gen8/Gen9/Gen10, DL360 Gen9/Gen10, ML350 Gen9/Gen10
• HPE ProLiant DL580 Gen10, DL560 Gen10 and other LFF SAS ProLiant platforms
• Compatible with HPE Smart Array P408i-a, P816i-a, and other Gen9/Gen10 SAS controllers

Frequently Asked Questions

Is 857644-B21 the same drive as 857965-001?

Yes — 857644-B21 is the option kit part number and 857965-001 is the spare part number. Both are HPE 10TB SAS 12Gb/s 7200RPM 512e midline LFF drives with Smart Carrier and are functionally interchangeable.

Does 857644-B21 work with non-HPE SAS controllers?

HPE digitally signed drives are optimized for HPE Smart Array controllers. Use in third-party SAS HBAs may generate compatibility warnings on HPE platforms — confirm with your controller's documentation.

What RAID levels are supported with 857644-B21?

Supported RAID levels depend on the HPE Smart Array controller in your ProLiant server. Common configurations include RAID 5, RAID 6, and RAID 10 for nearline capacity arrays.

The HPE 857644-B21 10TB SAS 12Gb/s midline hard drive is the option kit solution for ProLiant Gen8 through Gen10 high-capacity storage. Order today — in stock at the lowest price.