Replacement for 21044536: Drop-In Alternatives We Stock
Looking for a replacement for the 21044536 (21044536 - IBM 36.40 GB 3.5 Internal Hard Drive - Ultra320 SCSI - 15000 rpm)? Pro Disk Network ships IBM 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 21044536
| SKU | 21044536 |
|---|---|
| Product | 21044536 - IBM 36.40 GB 3.5 Internal Hard Drive - Ultra320 SCSI - 15000 rpm |
| Current price | $415.37 |
| Stock status | In Stock |
| Detail page | View 21044536 › |
Drop-in replacements for 21044536
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.
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
06P5765 - IBM 18.20 GB 3.5 Internal Hard Drive - 1 Pack - OEM - Ultra160 SCSI - 15000 rpm - 4 MB Buffer
SKU: 06P5765
Price: $434.45
06P5767 - IBM 18.20 GB 3.5 Internal Hard Drive - 1 Pack - Retail - Ultra160 SCSI - 15000 rpm - 3.91 MB Buffer - Hot Swappable
SKU: 06P5767
Price: $438.16
06P5766 - IBM 36.40 GB 3.5 Internal Hard Drive - 1 Pack - Retail - Ultra160 SCSI - 15000 rpm
SKU: 06P5766
Price: $537.39
32P0784 - IBM 36.40 GB 3.5 Internal Hard Drive - 1 Pack - Ultra320 SCSI - 15000 rpm - 8 MB Buffer
SKU: 32P0784
Price: $537.39
9124-1972 - IBM 146.80 GB Internal Hard Drive - Ultra320 SCSI - 15000 rpm
SKU: 9124-1972
Price: $712.64
1814-5415 - IBM 300 GB Internal Hard Drive - Fibre Channel - 15000 rpm - Hot Swappable
SKU: 1814-5415
Price: $382.59
49Y1900 - IBM 450 GB 3.5 Internal Hard Drive - 6Gb/s SAS - 15000 rpm - Hot Swappable
SKU: 49Y1900
Price: $652.28
67Y1462 - IBM 450 GB 3.5 Internal Hard Drive - 6Gb/s SAS - 15000 rpm - Hot Swappable
SKU: 67Y1462
Price: $907.20
40K6804 - IBM 73.40 GB Hard Drive - Fibre Channel - 15000 rpm - Hot Swappable
SKU: 40K6804
Price: $173.68
40K6800 - IBM 36.40 GB Hard Drive - Fibre Channel - 15000 rpm - Hot Swappable
SKU: 40K6800
Price: $356.09
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.