Alternative to ST-251-1: Better-Value Equivalents in Stock
Comparing the ST-251-1 (ST-251-1 - Seagate 43MB 3600RPM MFM 5.25-inch Hard Drive) against alternatives? Pro Disk Network stocks 12 similar Seagate parts that offer comparable performance at different price points. Each option below is in-stock, US-warehoused, and tested-and-certified before ship. Bulk pricing is available on quantities of 5+; B2B procurement can use Net 30 with PO.
About the ST-251-1
| SKU | ST-251-1 |
|---|---|
| Product | ST-251-1 - Seagate 43MB 3600RPM MFM 5.25-inch Hard Drive |
| Current price | $480.21 |
| Stock status | In Stock |
| Detail page | View ST-251-1 › |
Alternatives to ST-251-1
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.
ST-4096 - Seagate 80MB 5.25-inch Modified Frequency Modulation MFM Hard Drive
SKU: ST-4096
Price: $565.32
9SU246-251 - Seagate Constellation 7200 500GB 7200RPM SAS 6Gb/s 16MB Cache 2.5-inch Hard Drive
SKU: 9SU246-251
Price: $113.68
9LD066-251 - Seagate Savvio 15K.2 147GB 15000RPM SAS 6Gb/s 16MB Cache 2.5-inch Hard Drive
SKU: 9LD066-251
Price: $136.84
9XS066-251 - Seagate Savvio 10K.5 900GB 10000RPM SAS 6Gb/s 64MB Cache 2.5-inch Hard Drive
SKU: 9XS066-251
Price: $143.39
9XU268-251 - Seagate 1TB 7200RPM SAS 6Gb/s SFF 2.5-inch Hard Drive with Tray
SKU: 9XU268-251
Price: $259.50
9PV066-251 - Seagate Cheetah 15K.7 300GB 15000RPM SAS 6Gb/s 16MB Cache (SED) LFF 3.5-inch Hard Drive
SKU: 9PV066-251
Price: $271.04
9XM066-251 - Seagate 300GB 15000RPM SAS 6Gb/s Self-Encrypting 2.5-inch Hard Drive
SKU: 9XM066-251
Price: $291.79
How we pick alternatives
Every recommendation above was selected using these criteria:
- Spec parity — capacity, speed, port count, and form factor matched within a 10% tolerance
- Price spread — alternatives shown across the price range, so you can pick on budget
- Brand mix — both OEM-equivalent and trusted aftermarket, all certified
- Reliability data — preferred parts have failure rates below 1% in our 18-month return tracking
- In stock today — shipping today, not 4-6 weeks from now
Want a side-by-side spec comparison?
We can prepare a written comparison covering throughput, power draw, form factor and validated compatibility. Email sales@prodisknetwork.com or call +1 (407) 205-8454 — most quotes ship within 4 business hours.