Replacement for 877525-B21: Drop-In Alternatives We Stock
Looking for a replacement for the 877525-B21 (877525-B21 - HP 12TB SAS Hard 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 877525-B21
| SKU | 877525-B21 |
|---|---|
| Product | 877525-B21 - HP 12TB SAS Hard Drive |
| Stock status | In Stock |
| Detail page | View 877525-B21 › |
Drop-in replacements for 877525-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.
AD597B - HP StorageWorks MSL6030 Tape Library 6TB (Native) / 12TB (Compressed) LTO Ultrium 2 12TB (Native) / 24TB (Compressed) LTO Ultrium 3 SCSI
SKU: AD597B
Price: $806.83
BL536B - HP 1/8 G2 LTO-5 Ultrium 3000 SAS Tape Autoloader (BL536B) 12TB (Native) / 24TB (Compressed) SAS
SKU: BL536B
Price: $1,915.79
882398-001 - HP 12TB 700RPM SAS 12Gb/s Helium 512e 3.5-inch Digitally Signed Firmware Midline Hard Drive
SKU: 882398-001
Price: $331.58
868210-001 - HP 12TB 700RPM SAS 12Gb/s Helium 512e 3.5-inch Digitally Signed Firmware Midline Hard Drive
SKU: 868210-001
Price: $397.89
881783-B21 - HP 12TB 700RPM SAS 12Gb/s Helium 512e LFF 3.5-inch Digitally Signed Firmware Midline Hard Drive
SKU: 881783-B21
Price: $468.42
MB012000JWDFD HP 12TB 7200RPM SAS 12Gb/s Helium 512E 3.5-inch Hard Drive
SKU: MB012000JWDFD
Price: $600.00
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.