Replacement for STM3500630AS: Drop-In Alternatives We Stock
Looking for a replacement for the STM3500630AS (STM3500630AS - Seagate DiamondMax 21 500GB 7200RPM SATA 3Gb/s 16MB 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 STM3500630AS
| SKU | STM3500630AS |
|---|---|
| Product | STM3500630AS - Seagate DiamondMax 21 500GB 7200RPM SATA 3Gb/s 16MB Cache 3.5-inch Hard Drive |
| Current price | $211.00 |
| Stock status | In Stock |
| Detail page | View STM3500630AS › |
Drop-in replacements for STM3500630AS
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.
9DP146-326 - Seagate Maxtor DiamondMax 21 500GB 7200RPM SATA 3Gb/s 16MB Cache 3.5-inch Hard Drive
SKU: 9DP146-326
Price: $327.50
STM3320620AS - Seagate DiamondMax 21 320GB 7200RPM SATA 3Gb/s 16MB Cache 3.5-inch Hard Drive
SKU: STM3320620AS
Price: $110.53
9DP046-305 - Seagate DiamondMax 21 500GB 7200RPM ATA-100 16MB Cache 3.5-inch Hard Drive
SKU: 9DP046-305
Price: $343.63
9DP046-326 - Seagate Maxtor DiamondMax 21 500GB 7200RPM ATA-100 16MB Cache 3.5-inch Hard Drive
SKU: 9DP046-326
Price: $437.78
STM3250310AS - Seagate DiamondMax 21 250GB SATA 3Gb/s 7200RPM 8MB Cache Hot Swappable 3.5-inch Hard Drive
SKU: STM3250310AS
Price: $66.97
STM3160815AS - Seagate DiamondMax 21 160GB SATA 3Gb/s 7200RPM 8MB Cache Hot Swappable 3.5-inch Hard Drive
SKU: STM3160815AS
Price: $154.93
STM380215AS - Seagate DiamondMax 21 80GB 7200RPM SATA 3Gb/s 2MB Cache 3.5-inch Hard Drive
SKU: STM380215AS
Price: $189.47
9DP13F-326 - Seagate Maxtor DiamondMax 21 200GB 7200RPM SATA 3Gb/s 8MB Cache 3.5-inch Hard Drive
SKU: 9DP13F-326
Price: $296.80
STM380211AS - Seagate DiamondMax 20 80GB 7200RPM SATA 3Gb/s 2MB Cache 3.5-inch Hard Drive
SKU: STM380211AS
Price: $344.84
STM340211AS - Seagate DiamondMax 20 40GB SATA 3Gb/s 7200RPM 2MB Cache 3.5-inch Hard Drive
SKU: STM340211AS
Price: $482.62
STM3160211AS - Seagate DiamondMax 20 160GB SATA 3Gb/s 7200RPM 2MB Cache Hot Swappable 3.5-inch Hard Drive
SKU: STM3160211AS
Price: $554.59
STM3250820A - Seagate DiamondMax 21 250GB 3.5-inch Hard Drive ATA-100 7200RPM 16MB Cache
SKU: STM3250820A
Price: $474.61
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.