Replacement for 831739-B21: Drop-In Alternatives We Stock
Looking for a replacement for the 831739-B21 (831739-B21 - HP 6.4TB 2.5-inch Solid State Drive)? Pro Disk Network ships HP drop-in replacements and equivalent modern parts from US inventory. Every alternate below is in-stock today with same-day shipping for orders placed before 2pm ET. If your unit is still under warranty, contact our engineering team — we offer cross-shipping for B2B customers on Net 30 terms.
About the 831739-B21
| SKU | 831739-B21 |
|---|---|
| Product | 831739-B21 - HP 6.4TB 2.5-inch Solid State Drive |
| Current price | $3,996.63 |
| Stock status | In Stock |
| Detail page | View 831739-B21 › |
Drop-in replacements for 831739-B21
Each part below is currently in our US warehouse, ships same-day for orders before 2pm ET, and includes our 90-day warranty. SKUs link to the full product page with photos, datasheets and B2B quote form.
QR502A - HP 100GB Single-Level Cell SAS 6Gb/s 2.5-inch Solid State Drive for M6710 Drive Enclosure
SKU: QR502A
Price: $73.68
742006-003 - HP Z Turbo Drive G2 256GB PCI Express M.2 2280 Solid State Drive
SKU: 742006-003
Price: $155.79
829094-005 - HP Z Turbo Drive 512GB Multi-Level Cell PCI Express 2.0 x4 Card Solid State Drive
SKU: 829094-005
Price: $205.26
918354-001 - HP Turbo Drive G2 256GB Triple-Level Cell Solid State Drive
SKU: 918354-001
Price: $247.58
T6U42ATR - HP Z Turbo Drive G2 256GB Multi-Level Cell PCI-Express NVMe 3.0 x4 HH-HL Add-in Card Solid State Drive
SKU: T6U42ATR
Price: $250.53
T6U42AAR - HP Z Turbo Drive G2 256GB Multi-Level Cell PCI-Express NVMe 3.0 x4 HH-HL Add-in Card Solid State Drive
SKU: T6U42AAR
Price: $250.53
T6U42AA - HP Z Turbo Drive G2 256GB PCI Express M2 Solid State Drive for Workstation Z240
SKU: T6U42AA
Price: $259.50
M1F73AT - HP Z Turbo Drive G2 256GB Multi-Level Cell PCI Express 3.5-inch Solid State Drive for Z240 / Z840
SKU: M1F73AT
Price: $259.50
M1F73AA - HP Z Turbo Drive 256GB Multi-Level Cell PCI Express 2.5-inch Solid State Drive for Z440 / Z640
SKU: M1F73AA
Price: $259.50
1PD56AA - HP Z Turbo Drive 256GB PCI-Express Plug-in Card Solid State Drive
SKU: 1PD56AA
Price: $273.91
How we pick replacements
Every recommendation above was selected using these criteria:
- Drop-in compatibility — same form factor (2.5"/3.5", PCIe slot, SFP port, etc.), so it fits the original chassis without modification
- Equivalent or better performance — matched on RPM/IOPS/speed/throughput, never downgraded
- Same-brand-preferred — we list the OEM-equivalent first when available, then trusted aftermarket
- Warranty coverage — 90-day Pro Disk warranty on every part, with 1-year option for B2B
- In stock today — never recommend a part that is on backorder
Need help confirming compatibility?
Our engineers validate every replacement against your specific server, switch, or chassis model before shipment. Email sales@prodisknetwork.com with your platform model (e.g., Dell PowerEdge R740, HP DL380 Gen10, Cisco Catalyst 9300) and we will confirm the exact part number that drops into your hardware.