Western Digital Caviar Green 3TB: An Expensive Storage Option

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Western Digital’s WD 30EZRS certainly looks an attractive storage solution with an enormous 3 TB capacity and a 64 MB cache. The new 3TB internal hard drive for desktops looks like a good option for those who want to store a ton of movies, software, games and images. While a large capacity might sound great, can you expect equally impressive performance?

The 3.5-inch internal HDD is like every standard HDD in terms of design. The drive uses a SATA2 interface with a bandwidth of 3Gb/s.

Got a big 3 TB appetite

Got a big 3 TB appetite


Test Rig Specifications
Processor: Intel Core i7-2600K CPU @ 3.40 GHz
Motherboard: GIGABYTE P67A-UD3R
Memory: Corsair Dominator GT 4 GB DDR3 (2 x 2 GB)
Hard drive: WD Velociraptor  300 GB
GPU: ASUS GeForce GTX 580 DirectCU II
PSU: Cooler Master 1000W

SATA interface with 3 Gb/s bandwidth

SATA interface with 3 Gb/s bandwidth


Kicking off the performance scores, the WD 3 TB hard drive recorded a drive index of 93.9 MB/s. While these are our synthetic benchmark scores, we also tried some file copy tests with assorted and sequential sets of 2 GB and 4 GB of data. In one test where we transferred files from this hard drive to our Velociraptor, we got read speeds of 96.45 MB/s for a 2 GB assortment file and write speeds of 78.86 MB/s for the same. The other test was where we created partitions in the hard drive itself and transferred file sets between them. Here we got a read speed of 72.70 MB/s and a really poor write speed of 28.84 MB/s.






The WD 3 TB Hard Drive is a decent performer overall. A capacity of 3 TB is pretty good for heavy data users who are on the lookout for storing movies and more. However, at a price of Rs. 10,700 makes the WD30EZRS very expensive when it comes to price per GB comparison. A typical 2TB desktop drive sells for an approximate Rs. 5,000, which means you’d be better off buying two such hard drives if capacity is what you want.



Capacity 3TB

Form Factor

3.5 inch Yes


Serial ATA (SATA) SATA 3Gb/s


Spindle Yes


Size (Cache) 64MB