Replacement for 250020-B21: Drop-In Alternatives We Stock
Looking for a replacement for the 250020-B21 (250020-B21 - Compaq 80 GB 3.5 Internal Hard Drive - 1 Pack - OEM - IDE Ultra ATA/100 (ATA-6) - 7200 rpm - 2 MB Buffer)? 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 250020-B21
| SKU | 250020-B21 |
|---|---|
| Product | 250020-B21 - Compaq 80 GB 3.5 Internal Hard Drive - 1 Pack - OEM - IDE Ultra ATA/100 (ATA-6) - 7200 rpm - 2 MB Buffer |
| Current price | $182.93 |
| Stock status | In Stock |
| Detail page | View 250020-B21 › |
Drop-in replacements for 250020-B21
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.
MK8032GSX - Toshiba MK8032GSX 80 GB 2.5 Internal Hard Drive - 1 Pack - SATA/150 - 5400 rpm - 8 MB Buffer
SKU: MK8032GSX
Price: $128.84
07N6803 - IBM 36.70 GB 3.5 Internal Hard Drive - 1 Pack - Ultra160 SCSI - 15000 rpm - 4 MB Buffer - Hot Swappable
SKU: 07N6803
Price: $149.21
07N9200 - IBM 80 GB 3.5 Internal Hard Drive - 1 Pack - Retail - IDE Ultra ATA/100 (ATA-6) - 7200 rpm - 2 MB Buffer
SKU: 07N9200
Price: $250.45
L01J080G - Maxtor DiamondMax Plus D740X 80 GB 3.5 Internal Hard Drive - 1 Pack - Retail - IDE Ultra ATA/133 (ATA-7) - 7200 rpm - 2 MB Buffer
SKU: L01J080G
Price: $269.20
09N4226 - IBM 80 GB 3.5 Internal Hard Drive - 1 Pack - IDE Ultra ATA/100 (ATA-6) - 7200 rpm - 2 MB Buffer
SKU: 09N4226
Price: $296.30
07N6380 - IBM 18.30 GB 3.5 Internal Hard Drive - 1 Pack - Ultra160 SCSI - 10000 rpm - 4 MB Buffer - Hot Swappable
SKU: 07N6380
Price: $296.30
09N4248 - IBM 80 GB 3.5 Internal Hard Drive - 1 Pack - IDE Ultra ATA/100 (ATA-6) - 7200 rpm - 2 MB Buffer
SKU: 09N4248
Price: $318.32
91.AB033.081 - Acer 80 GB 3.5 Internal Hard Drive - 1 Pack - IDE Ultra ATA/33 (ATA-4) - 7200 rpm
SKU: 91.AB033.081
Price: $364.28
E800CFQU - Fujitsu 500GB 7200RPM SATA 3Gbps 3.5-inch Internal Hard Drive (8-Pack)
SKU: E800CFQU
Price: $387.26
E800CDQU - Toshiba 500 GB Internal Hard Drive - 4 Pack - SATA/150 - 7200 rpm - Hot Swappable
SKU: E800CDQU
Price: $387.26
52P8627 - IBM 146.80 GB Internal Hard Drive - 1 Pack - Ultra320 SCSI - 10000 rpm
SKU: 52P8627
Price: $565.32
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.