Replacement for 3900423: Drop-In Alternatives We Stock
Looking for a replacement for the 3900423 (390-0423 - Sun 300GB 15000RPM SAS 3Gb/s Hot-Pluggable 16MB Cache 3.5-inch Hard Drive)? Pro Disk Network ships 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 3900423
| SKU | 3900423 |
|---|---|
| Product | 390-0423 - Sun 300GB 15000RPM SAS 3Gb/s Hot-Pluggable 16MB Cache 3.5-inch Hard Drive |
| Stock status | In Stock |
| Detail page | View 3900423 › |
Drop-in replacements for 3900423
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.
390-0423-02 - Sun 300GB 15000RPM SAS 3GB/s Hot-Pluggable 16MB Cache 3.5-inch Hard Drive
SKU: 390-0423-02
Price: $315.66
390-0423 - Sun 300GB 15000RPM SAS 3GB/s Hot-Pluggable 16MB Cache 3.5-inch Hard Drive
SKU: 390-0423
Price: $315.66
542-0423 - Sun 600GB 10000RPM SAS 6Gb/s Hot-Swappable 16MB Cache 2.5-inch Hard Drive with Bracket
SKU: 542-0423
Price: $392.99
542-0423-01 - Sun 600GB 10000RPM SAS 6GB/s Hot Swap 16MB Cache 2.5-inch Internal Hard Drive
SKU: 542-0423-01
Price: $548.21
390-0461-04 Sun 300GB 15000RPM SAS 3GB/s 16MB Cache Hot-Pluggable 3.5-inch Hard Drive
SKU: 390-0461-04
Price: $121.05
390-0372 - Sun 300GB 15000RPM SAS 3GB/s Hot-Pluggable 16MB Cache 3.5-inch Hard Drive
SKU: 390-0372
Price: $145.26
390-0461 - Sun 300GB 15000RPM SAS 3GB/s Hot-Pluggable 16MB Cache 3.5-inch Hard Drive
SKU: 390-0461
Price: $187.37
390-0372-01 - Sun 300GB 15000RPM SAS 3GB/s Hot-Pluggable 16MB Cache 3.5-inch Hard Drive
SKU: 390-0372-01
Price: $296.30
390-0461-02 - Sun 300GB 15000RPM SAS 3GB/s Hot-Pluggable 16MB Cache 3.5-inch Hard Drive
SKU: 390-0461-02
Price: $344.33
390-0372-03 Sun 300GB 15000RPM SAS 3GB/s 16MB Cache Hot-Swappable 3.5-inch Hard Drive
SKU: 390-0372-03
Price: $344.84
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.