When making comparisons, be sure to compare Read speed and Write speed individually as the specs are not interchangeable. And remember that these are maximum speeds, not necessarily sustained speeds. Therefore, a data transfer rate of 480Mbps equals only 60MBps.
There are eight (8) Megabits in one Megabyte. But don’t confuse Megabits per second (Mbps) with Megabytes per second (MBps). It’s usually expressed in MB (Megabytes) per second, or MBps. This is a spec that many drive makers don’t mention. It’s preformatted for a Mac but is compatible with Windows PCs if reformatted. For most photographers, an external drive in the 2TB to 8TB range is sufficient, but my advice is to always buy more storage than you think you need.Ĭool-looking G-Technology 1TB G-Drive offers USB 3.0 and SATA Interfaces, Data Transfer Speeds up to 136 MBps, 7200 rpm, Bus Powered and Shock Resistance up to about 5 feet. Capacity, to a certain extent, determines cost. Sizes range from 1TB (Terabyte which equals 1,000 Gigabytes) to 48TB or greater. NAS drives are generally larger capacity and larger overall because they can sit anywhere on your network and rarely need to be moved.
Portables offer the added advantage of being easier to rescue in an emergency (find recommendations for a “Grab and Go External Hard Drive” in my 2017 article 7 Essentials For Managing Photo-Related Emergencies). Portables, on the other hand, range from the size of a deck of cards to about the size of a cigar box. Physically, think of a desktop HDD as being about the size of a college dictionary. NAS drives can be shared easily by all family members. A third popular choice is the NAS (Network Attached Storage) drive that is connected to your home network and can be accessed from anywhere you find an internet connection. Those are the two basic options, Desktop and Portable. Portables are more suitable if you need to move the external storage from computer to computer or want to use it with a notebook computer while on the go. Spindle drives use spinning platters and are generally slower, bigger and cheaper when compared head-to-head with SSD.Ī desktop HDD (Hard Disk Drive) is a common choice if you plan to leave it tethered to your computer.
Solid State Drives (SSD) are very fast and have fewer moving parts, but are often more expensive and typically have less storage capacity. This Western Digital My Passport desktop HDD offers 1TB Storage Capacity, Micro-USB 3.0 interface, Data Protection with Hardware Encryption and it’s Bus Powered.
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