Bad thing about DSLR is the photo taken at 24.3MPixel always need big space to store photos, each of the photos consist more than 3MB per photo, sometimes hundred of photos can reach more GB in storage, mainly have many places, many moment to shoots, so big storage need to be prepared to store of the moments. Western Digital already meet the storage to the value of 2TB of storage, huge storage that can store hundred thousand of photos instead using internal HDD in PC. Most PC need larger space to cache their memory to optimize power and acceleration. Since Wd not have hybrid disk for internal, external solution is good for emergency solution. Price may vary to storage capacity and can reach RM 500 and above depend on specification stated.