Replacement for ST318417N: Drop-In Alternatives We Stock
Looking for a replacement for the ST318417N (ST318417N - Seagate BarraCuda 18.4GB 7200RPM Ultra- SCSI 2MB 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 ST318417N
| SKU | ST318417N |
|---|---|
| Product | ST318417N - Seagate BarraCuda 18.4GB 7200RPM Ultra- SCSI 2MB Cache 3.5-inch Hard Drive |
| Current price | $378.95 |
| Stock status | In Stock |
| Detail page | View ST318417N › |
Drop-in replacements for ST318417N
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.
ST39236LC - Seagate BarraCuda 9.2GB 7200RPM Ultra-160-80-Pin SCSI 2MB Cache 3.5-inch Hard Drive
SKU: ST39236LC
Price: $155.79
ST318416W - Seagate BarraCuda 18XL 18.4GB Wide Ultra SCSI 7200RPM 2MB Cache 3.5-inch Hard Drive
SKU: ST318416W
Price: $221.74
P1217-69001 - HP / Seagate BarraCuda 18XL 9GB 7200RPM Ultra-3 SCSI 80-Pin 2MB Cache Hot-Swappable 3.5-inch Hard Drive
SKU: P1217-69001
Price: $401.92
ST318437LW - Seagate Barracuda 36ES 18.4GB 7200RPM Ultra-160 SCSI 68-Pin 2MB Cache 3.5-inch Hard Drive
SKU: ST318437LW
Price: $442.11
9N3004-033 - Seagate BarraCuda 18XL 9.2GB 7200RPM Ultra SCSI 50-Pin 2MB Cache 3.5-inch Hard Drive
SKU: 9N3004-033
Price: $463.36
9N3012-055 - HP / Seagate BarraCuda 18XL 9.2GB 7200RPM Ultra-160 SCSI 68-Pin 2MB Cache 3.5-inch Hard Drive
SKU: 9N3012-055
Price: $568.96
9U2004-001 - Seagate BarraCuda 36ES 18.4GB 7200RPM Ultra SCSI 50-Pin 2MB Cache 3.5-inch Hard Drive
SKU: 9U2004-001
Price: $714.97
9V7004-001 - Seagate BarraCuda 36ES2 36.9GB 7200RPM Ultra SCSI 50-Pin 2MB Cache 3.5-inch Hard Drive
SKU: 9V7004-001
Price: $745.09
ST318418N - Seagate BarraCuda 36ES 18.4GB 7200RPM Ultra SCSI 50-Pin 2MB Cache 3.5-inch Hard Drive
SKU: ST318418N
Price: $752.63
9U2004-301 - Seagate BarraCuda 36ES 18.4GB 7200RPM Ultra SCSI 50-Pin 2MB Cache 3.5-inch Hard Drive
SKU: 9U2004-301
Price: $934.03
ST336918N - Seagate BarraCuda 36ES2 36.9GB 7200RPM Ultra SCSI 50-Pin 2MB Cache 3.5-inch Hard Drive
SKU: ST336918N
Price: $1,078.74
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.