Replacement for DK237A-21: Drop-In Alternatives We Stock
Looking for a replacement for the DK237A-21 (DK237A-21 - Hitachi 2.1GB 4000RPM ATA/IDE 2.5-inch Hard Drive)? Pro Disk Network ships Hitachi 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 DK237A-21
| SKU | DK237A-21 |
|---|---|
| Product | DK237A-21 - Hitachi 2.1GB 4000RPM ATA/IDE 2.5-inch Hard Drive |
| Current price | $192.08 |
| Stock status | In Stock |
| Detail page | View DK237A-21 › |
Drop-in replacements for DK237A-21
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.
HTS721080G9AT00 - Hitachi TravelStar 7K100 80GB 7200RPM 8MB Cache IDE Ultra ATA/100 (ATA-6) 44-Pin 2.5-inch Hard Drive
SKU: HTS721080G9AT00
Price: $157.89
HTS421240H9AT00 - Hitachi Travelstar 4K120 40GB 4200RPM IDE Ultra ATA/100 (ATA-6) 2MB Cache 2.5-inch Hard Drive
SKU: HTS421240H9AT00
Price: $190.79
HTS421260G9AT00 - Hitachi Travelstar 4K120 60GB 4200RPM IDE Ultra ATA/100 (ATA-6) 2MB Cache 2.5-inch Hard Drive
SKU: HTS421260G9AT00
Price: $194.87
HTS721060M9AT00 - Hitachi Travelstar 7K100 60GB 7200RPM IDE Ultra ATA/100 (ATA-6) 8MB Cache 2.5-inch Hard Drive
SKU: HTS721060M9AT00
Price: $194.87
HTE721060M9AT00 - Hitachi Travelstar E7K100 60GB 7200RPM IDE Ultra ATA/100 (ATA-6) 8MB Cache 2.5-inch Hard Drive
SKU: HTE721060M9AT00
Price: $194.87
07N9214 - Hitachi Deskstar 180GXP 120GB 7200RPM IDE Ultra ATA/133 (ATA-7) 2MB Cache 3.5-inch Hard Drive
SKU: 07N9214
Price: $235.79
HTS721040G9AT00 - Hitachi Travelstar 7K100 40GB 7200RPM IDE Ultra ATA/100 (ATA-6) 8MB Cache 2.5-inch Hard Drive
SKU: HTS721040G9AT00
Price: $239.55
HTS412112H9AT00 - Hitachi Travelstar 4K120 120GB 4200RPM IDE Ultra ATA/100 (ATA-6) 8MB Cache 2.5-inch Hard Drive
SKU: HTS412112H9AT00
Price: $250.47
HDS721010KLAT60 - Hitachi Deskstar 7K1000 1TB 7200RPM IDE Ultra ATA/133 (ATA-7) 8MB Cache 3.5-inch Hard Drive
SKU: HDS721010KLAT60
Price: $414.32
HEJ421080G9AT00 - Hitachi Endurastar J4K100 80GB 4200RPM IDE Ultra ATA/100 (ATA-6) 8MB Cache 2.5-inch Hard Drive
SKU: HEJ421080G9AT00
Price: $1,025.68
HEJ421010G9AT00 - Hitachi Endurastar J4K100 100GB 4200RPM IDE Ultra ATA/100 (ATA-6) 8MB Cache 2.5-inch Hard Drive
SKU: HEJ421010G9AT00
Price: $1,175.51
HEJ421040G9AT00 - Hitachi Endurastar J4K100 40GB 4260RPM IDE / ATA-100 8MB Cache 2.5-inch Hard Drive
SKU: HEJ421040G9AT00
Price: $117.63
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.