Replacement for ST12550N: Drop-In Alternatives We Stock
Looking for a replacement for the ST12550N (ST12550N - Seagate BarraCuda 2.5-inchGB 7200RPM Fast SCSI 50-Pin 1MB Cache 3.5-inch Hard Drive)? Pro Disk Network ships Seagate 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 ST12550N
| SKU | ST12550N |
|---|---|
| Product | ST12550N - Seagate BarraCuda 2.5-inchGB 7200RPM Fast SCSI 50-Pin 1MB Cache 3.5-inch Hard Drive |
| Current price | $265.26 |
| Stock status | In Stock |
| Detail page | View ST12550N › |
Drop-in replacements for ST12550N
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.
9A8001-042 - Seagate BarraCuda 4.3GB 7200RPM Fast SCSI 50-Pin 1MB Cache 3.5-inch Hard Drive
SKU: 9A8001-042
Price: $88.78
9A8001-101 - Seagate BarraCuda 4.3GB 7200RPM Fast SCSI 50-Pin 1MB Cache 3.5-inch Hard Drive
SKU: 9A8001-101
Price: $144.82
9A8001-037 - Seagate BarraCuda 4.3GB 7200RPM Fast SCSI 50-Pin 1MB Cache 3.5-inch Hard Drive
SKU: 9A8001-037
Price: $259.46
9A8001-141 - Seagate BarraCuda 4.3GB 7200RPM Fast SCSI 50-Pin 1MB Cache 3.5-inch Hard Drive
SKU: 9A8001-141
Price: $259.46
9A8001-001 - Seagate BarraCuda 4.3GB 7200RPM Fast SCSI 50-Pin 1MB Cache 3.5-inch Hard Drive
SKU: 9A8001-001
Price: $273.12
9A8001-029 - Seagate BarraCuda 4.3GB 7200RPM Fast SCSI 50-Pin 1MB Cache 3.5-inch Hard Drive
SKU: 9A8001-029
Price: $304.57
9A8001-033 - Seagate BarraCuda 4.3GB 7200RPM Fast SCSI 50-Pin 1MB Cache 3.5-inch Hard Drive
SKU: 9A8001-033
Price: $363.11
ST15150N - Seagate BarraCuda 4 4.29GB 7200RPM Fast SCSI 1MB Cache 50-Pin 3.5-inch Hard Drive
SKU: ST15150N
Price: $366.32
ST12550WD - Seagate BarraCuda 2.1GB 7200RPM Fast Wide SCSI 68-Pin 1MB Cache 3.5-inch Hard Drive
SKU: ST12550WD
Price: $480.21
ST15150WD - Seagate BarraCuda 4.29GB 7200RPM Fast Wide SCSI 1MB Cache 3.5-inch Hard Drive
SKU: ST15150WD
Price: $143.39
9B0001-126 - Seagate BarraCuda 2.1GB 7200RPM Fast SCSI 50-Pin 512KB Cache (CE) 3.5-inch Hard Drive
SKU: 9B0001-126
Price: $74.09
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.