Replacement for X5251A: Drop-In Alternatives We Stock
Looking for a replacement for the X5251A (X5251A - Sun 9.1GB 7200RPM Ultra Wide SCSI 80-Pin 512KB Cache 3.5-inch Hard Drive with Bracket)? 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 X5251A
| SKU | X5251A |
|---|---|
| Product | X5251A - Sun 9.1GB 7200RPM Ultra Wide SCSI 80-Pin 512KB Cache 3.5-inch Hard Drive with Bracket |
| Current price | $189.47 |
| Stock status | In Stock |
| Detail page | View X5251A › |
Drop-in replacements for X5251A
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.
X5229A - Sun 9.1GB 7200RPM SCSI Fast Wide Ultra 80-Pin 3.5-Inch Internal Hard Drive for Sun Ultra Netra Enterprise and Storedge
SKU: X5229A
Price: $157.07
540-3704 - Sun 9.1GB 7200RPM SCSI Fast Wide Ultra 80-Pin 3.5-Inch Internal Hard Drive for Sun Ultra Netra Enterprise and Storedge
SKU: 540-3704
Price: $165.79
370-3404 - Sun 9.1GB 7200RPM SCSI Fast Wide Ultra 80-Pin 3.5-Inch Internal Hard Drive for Sun Ultra Netra Enterprise and Storedge
SKU: 370-3404
Price: $205.26
370-3413 - Sun 9.1GB 7200RPM SCSI Fast Wide Ultra 80-Pin 3.5-Inch Internal Hard Drive for Sun Ultra Netra Enterprise and Storedge
SKU: 370-3413
Price: $205.26
390-0007 - Sun 9.1GB 7200RPM SCSI Fast Wide Ultra 80-Pin 3.5-Inch Internal Hard Drive for Sun Ultra Netra Enterprise and Storedge
SKU: 390-0007
Price: $273.91
390-0004 - Sun 9.1GB 7200RPM SCSI Fast Wide Ultra 80-Pin 3.5-Inch Internal Hard Drive for Sun Ultra Netra Enterprise and Storedge
SKU: 390-0004
Price: $296.30
370-3595 - Sun 9.1GB 7200RPM SCSI Fast Wide Ultra 80-Pin 3.5-Inch Internal Hard Drive for Sun Ultra Netra Enterprise and Storedge
SKU: 370-3595
Price: $344.33
3702808-02 - Sun 2.1GB 7200RPM Ultra Wide SCSI 3.5-inch Hard Drive for SPARCstorage Ultra and Enterprise Servers
SKU: 3702808-02
Price: $246.92
540-2938 - Sun 4.3GB 7200RPM Ultra Wide SCSI 80-Pin 512KB Cache 3.5-inch Internal Hard Drive
SKU: 540-2938
Price: $205.26
X5214A - Sun / Seagate BarraCuda 4LP 4.2GB 7200RPM Ultra Wide SCSI 80-Pin 512KB Cache Hot-Swappable 3.5-inch Hard Drive
SKU: X5214A
Price: $211.00
370-2367-02 - Sun / Seagate BarraCuda 4LP 4.3GB 7200RPM Ultra Wide SCSI 80-Pin 512KB Cache 3.5-inch Hard Drive
SKU: 370-2367-02
Price: $291.79
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.