Western Digital
Western Digital Ultrastar DC HC310 6TB 7.2K SAS 12G LFF 512e Hard Drive
HUS726T6TAL5204
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Western Digital
WD40EFZX
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Western Digital
Western Digital WD Red Plus 4TB 128MB SATA 6Gb/s 3.5in NAS Hard Drive
MPNWD40EFZX
Western Digital WD Red Plus 4TB (WD40EFZX) is a CMR NAS hard drive in the 3.5in size, spinning at 5400 RPM with a 128MB cache on SATA 6Gb/s.
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Western Digital WD Red Plus 4TB 128MB SATA 6Gb/s 3.5in NAS Hard Drive
WD40EFZX · Refurbished · 1 year warranty
Quantity (units)
Overview
NAS boxes in small offices run all day and often rebuild RAID sets, so CMR recording matters. The WD Red Plus WD40EFZX uses CMR, stores 4TB in a 3.5in LFF format and spins at 5400 RPM. It has a 128MB cache and reaches 175 MB/s over SATA 6Gb/s.
Ratings include a 180 TB per year workload, 600,000 load/unload cycles and an MTBF of 1,000,000 hours. Those numbers suit file shares, backup targets and media servers on a NAS rather than a desktop.
Power draw is 4.8 W in read/write, 3.1 W at idle and 0.4 W in standby. It operates from 0 to 65°C and weighs 0.57 kg.
We supply the WD40EFZX New, Refurbished or Used. New and Refurbished units come with 1 year or 3 years of warranty; Used units carry 90 days. When filling a NAS, send the bay count and model and we will price the set.
Specifications
| Manufacturer part number | WD40EFZX |
|---|---|
| Brand | Western Digital |
| Cache | 128 MB |
| Interface | SATA |
| Weight | 0.57 kg |
| Drive type | HDD |
| Mtbf hours | 1,000,000 |
| Form factor | 3.5in LFF |
| Power idle w | 3.1 |
| Product line | WD Red Plus |
| Capacity | 4TB |
| Warranty years | 3 |
| Power standby w | 0.4 |
| Operating temp c | 0 to 65 |
| Load unload cycles | 600,000 |
| Power read write w | 4.8 |
| Interface speed | 6 Gb/s |
| Recording technology | CMR |
| Rotational speed | 5,400 rpm |
| Workload tb per year | 180 |
| Max transfer rate mbps | 175 |
Specifications from the manufacturer's datasheet ↗
FAQ
- Is the WD40EFZX a CMR drive?
- Yes. The WD Red Plus 4TB uses CMR recording.
- What rotational speed does the WD40EFZX run at?
- 5400 RPM.
- What workload is the WD Red Plus 4TB rated for?
- 180 TB per year.
- Which warranty options are available?
- New and Refurbished: 1 year or 3 years. Used: 90 days.
Can't find the exact part?
Send us the part number. We search our supplier network for new, refurbished and used stock and reply within 1 business day.