Replacement for ST400NM0023: Drop-In Alternatives We Stock
Looking for a replacement for the ST400NM0023 (ST400NM0023 - Seagate Constellation ES.3 4TB 7200RPM SAS 6Gb/s 128MB 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 ST400NM0023
| SKU | ST400NM0023 |
|---|---|
| Product | ST400NM0023 - Seagate Constellation ES.3 4TB 7200RPM SAS 6Gb/s 128MB Cache 3.5-inch Hard Drive |
| Stock status | In Stock |
| Detail page | View ST400NM0023 › |
Drop-in replacements for ST400NM0023
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.
1C1270-041 - Seagate Constellation ES.3 4TB 7200RPM SAS 6Gb/s 128MB Cache (CE) 3.5-inch Hard Drive
SKU: 1C1270-041
Price: $129.66
9ZM270-035 - Seagate Constellation ES.3 4TB 7200RPM SAS 6Gb/s 128MB Cache (CE) 3.5-inch Hard Drive
SKU: 9ZM270-035
Price: $145.26
9ZM270-155 - Seagate Constellation ES.3 4TB 7200RPM SAS 6Gb/s 128MB Cache (CE) 3.5-inch Hard Drive
SKU: 9ZM270-155
Price: $149.47
9ZM270-038 - Seagate Constellation ES.3 4TB 7200RPM SAS 6Gb/s 128MB Cache (CE) 3.5-inch Hard Drive
SKU: 9ZM270-038
Price: $149.47
9ZM270-036 - Seagate Constellation ES.3 4TB 7200RPM SAS 6Gb/s 128MB Cache (CE) 3.5-inch Hard Drive
SKU: 9ZM270-036
Price: $170.53
9ZM270-150 - Seagate Constellation ES.3 4TB 7200RPM SAS 6Gb/s 128MB Cache (CE) 3.5-inch Hard Drive
SKU: 9ZM270-150
Price: $173.68
9ZM270-037 - Seagate Constellation ES.3 4TB 7200RPM SAS 6Gb/s 128MB Cache (CE) 3.5-inch Hard Drive
SKU: 9ZM270-037
Price: $189.47
9ZM270-003 - Seagate Constellation ES.3 4TB 7200RPM SAS 6Gb/s 128MB Cache (CE) 3.5-inch Hard Drive
SKU: 9ZM270-003
Price: $194.74
9ZM270-157 - Seagate Constellation ES.3 4TB 7200RPM SAS 6Gb/s 128MB Cache (CE) 3.5-inch Hard Drive
SKU: 9ZM270-157
Price: $211.00
ST4000NM0023 - Seagate Constellation ES.3 4TB 7200RPM SAS 6Gb/s 128MB Cache 3.5-inch Hard Drive
SKU: ST4000NM0023
Price: $223.16
9ZM270-001 - Seagate Constellation ES.3 4TB 7200RPM SAS 6Gb/s 128MB Cache (CE) 3.5-inch Hard Drive
SKU: 9ZM270-001
Price: $259.50
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.