Replacement for 0B31878: Drop-In Alternatives We Stock
Looking for a replacement for the 0B31878 (0B31878 - Hitachi 1.8TB 10000RPM SAS 6Gb/s 2.5-inch Hard Drive with Tray)? 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 0B31878
| SKU | 0B31878 |
|---|---|
| Product | 0B31878 - Hitachi 1.8TB 10000RPM SAS 6Gb/s 2.5-inch Hard Drive with Tray |
| Current price | $636.22 |
| Stock status | In Stock |
| Detail page | View 0B31878 › |
Drop-in replacements for 0B31878
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.
5541893-A - Hitachi 146GB 15000RPM SAS 6Gb/s Hot-Swappable 2.5-inch Dual Port Hard Drive with Tray
SKU: 5541893-A
Price: $155.79
3272219-C - Hitachi 146GB 10000RPM Fibre Channel 3.5-inch Hard Drive with Tray for AMS200
SKU: 3272219-C
Price: $80.09
5524269-D - Hitachi 146GB 10000RPM Fibre Channel 2Gb/s 3.5-inch Hard Drive with Tray
SKU: 5524269-D
Price: $117.89
R2F-J300FC - Hitachi 300GB 10000RPM Fibre Channel 2Gb/s 16MB Cache 3.5-inch Hard Drive with Tray
SKU: R2F-J300FC
Price: $123.79
HUC106045CSS600 - Hitachi Ultrastar C10K600 450GB 10000RPM SAS 6Gb/s 64MB Cache 2.5-inch Hard Drive
SKU: HUC106045CSS600
Price: $68.42
HUC109090CSS600 - Hitachi Ultrastar C10K900 900GB 10000RPM SAS 6Gb/s SFF 2.5-inch Hard Drive
SKU: HUC109090CSS600
Price: $68.42
0B26017 - Hitachi Ultrastar C10K900 600GB 10000RPM SAS 6GB/s 64MB Cache 2.5-inch Hard Drive
SKU: 0B26017
Price: $73.68
0B24181 - Hitachi Ultrastar C10K300 300GB 10000RPM SAS 6GB/s 64MB Cache 2.5-inch Hard Drive
SKU: 0B24181
Price: $96.84
5541890-A HP / Hitachi 300GB 10000RPM SAS 6Gb/s 2.5-inch Dual Port Hard Drive
SKU: 5541890-A
Price: $96.84
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.