Their small size means they can often fit into a jacket or pants pocket, which makes them a better choice if you're looking for a portable external drive that you'll be carrying with you frequently. One major downside, however, is that they're more expensive. You could pay more than 30 cents per gigabyte for an SSD, while spinning drives can be had for less than 10 cents per gigabyte—and often much less.
Compare that with external spinning drives, which are easy to find in capacities in excess of 8TB. For professional videographers who edit lots of 4K footage and gamers or movie buffs who have large libraries of multi-gigabyte titles, an external RAID array is worth considering, since it combines the speed of an SSD with the gargantuan capacities of a spinning drive.
An array typically contains as few as two or as many as eight spinning drives, which all work together to speed up throughput, or guard your precious files against corruption via drive redundancy if one of the drives fail. Or both; it depends on how the array is set up. You'll pay handsomely, of course. On the other hand, if you're looking to buy an external drive mainly to back up your files which you should definitely do and it will rarely leave your home office, an inexpensive spinning drive will work just fine. So, to recap: Faster, smaller both physically and in terms of gigabytes solid-state drives come at a premium, while spinning drives offer a much better value while sacrificing speed.
But what happens when you throw yet another variable into the mix: the connection between your drive and your Mac? As you might have guessed, the answer is more tradeoffs.
Best external hard drives for Macs in | TechRadar
Almost every Mac laptop sold today comes with USB Type-C ports that support Thunderbolt 3, but other than a headphone jack, they are the only connectivity options available, which means you'll need an adapter to plug in any device that doesn't have a USB Type-C cable. Unfortunately, you won't find many Thunderbolt 3-compatible drives on the market currently. Even some Mac-specific drives are still sold with USB 3. Moreover, the Thunderbolt 3 drives you can buy are constrained by the maximum throughput of the drive itself, rather than the Thunderbolt 3 interface. This means that for now, it's best to include Thunderbolt 3 support in your buying decision only if you're concerned about futureproofing.
Drives intended for PCs sometimes come bundled with software that will automatically back up your files to the drive when it's connected, but such software isn't really a consideration for Mac users, who already have an excellent built-in backup option in the form of Time Machine.
The first time you plug in an external drive, Time Machine will ask if you want to use it as a backup drive. While you can customize backup options in System Preferences, such as asking Time Machine to exclude certain folders, there's no action required on your part if you're happy with the default settings. The next time you plug in your drive, Time Machine will automatically set to work creating a backup. Unless your drive is never going to leave your home or office, you should also consider its physical durability.
Rugged, waterproof drives are a good option not just for surfers and BMX riders, as their marketing seems to suggest, but also for people who are carrying their drives to and from school or work, where they might occasionally get spilled on or dropped on the floor. Check out our favorite rugged drives. Finally, you might want to consider how the drive will look when it's plugged into your Mac. Some drives come in a variety of colors. Many others feature copious amounts of aluminum and industrial-chic styling to match the design cues of your MacBook or iMac. We've selected a few of our favorite drives for Macs below; for more, check out our main list of best hard drives.
You can also read our full list of hard drive reviews , as well as our top SSDs. Certified waterproof and dustproof. Comes with USB 3. Cons: Warranty limited to two years. SSD option is still unreleased. Pros: Comes in a variety of large capacities. Three-year warranty. Cons: Requires external power adapter.
RAID-1 or Two External Hard Drives?
Pros: Slick, faceted design. Solid-feeling aluminum enclosure. Useful LaCie Toolkit software handles backup and restore, as well as mirroring. On-the-mark performance.
A brief primer on RAID
Cons: A little hefty. Toolkit utility requires a download. It's geared to macOS users, but it will please anyone with an eye for style in their gadgets. Pros: Fabric-covered enclosure. Small and light. Data protected by password and AES hardware encryption. Cons: Fabric cover a bit slippery to grip. Seagate Toolkit a separate download. Plus, a fabric coat adds appeal. Pros: Excellent performance. Includes USB 3. Android-, Mac-, and Windows-compatible. Cons: While a comparable good per-gigabyte value, the drive itself is expensive.
Pros: Excellent connectivity options and transfer speeds. Solid build quality and attractive aluminum finish. Easy disassembly. Cooling fan can be disabled. No software required for Macs. Hardware RAID controller. Cons: Expensive. Only 27W of power delivery. Pros: Relatively low cost per gigabyte. Drive is easily removable from its enclosure. Striping is the process of storing consecutive segments of data across different storage devices, and allows for better throughput and performance.
Disk striping alone does not make an array fault tolerant, however. Disk striping combined with parity provides RAID 5 with redundancy and reliability.
- RAID STORAGE;
- LaCie Portable SSD.
- mac boot from usb keyboard shortcut;
- RAID STORAGE.
RAID 5 used parity instead of mirroring for data redundancy. When data is written to a RAID 5 drive, the system calculates parity and writes that parity into the drive.
While mirroring maintains multiple copies of data in each volume to use in case of failure, RAID 5 can rebuild a failed drive using the parity data, which is not kept on a fixed single drive. By keeping data on each drive, any two drives can combine to equal the data stored on the third drive, keeping data secure in case of a single drive failure.
Fast, reliable reads are major benefits. This RAID configuration also offers inexpensive data redundancy and fault tolerance. Writes tend to be slower, because of the parity data calculation, but data can be accessed and read even while a failed drive is being rebuilt. When drives fail, the RAID 5 system can read the information contained on the other drives and recreate that data, tolerating a single drive failure.
Longer rebuild times are one of the major drawbacks of RAID 5, and this delay could result in data loss. Because of its complexity, RAID 5 rebuilds can take a day or longer, depending on controller speed and work load. If another disk fails during the rebuild, then data is lost forever. All RAID configurations offer benefits and drawbacks. Standard RAID levels such as 2, 3, 4 and 7 are not as commonly used as others, such as 5, 1, 6 and RAID 1 also has slower write speeds than 5. RAID 1 can still be a good choice in settings where data loss is unacceptable, such as data archiving.
Similar to RAID 5, while data is still accessible while a drive is being rebuilt, rebuilds can take a considerable amount of time. RAID 6 is considered an all-around solid system, and may be preferable to RAID 5 in environments where a high number of large drives are used for storage.
This process can take as little as 30 minutes, depending on the drive size. The drawback to RAID 10 is that half of all storage capacity goes to mirroring, which can speed up rebuilds but can become expensive quickly. Despite the numerous configurations available, RAID is an aging technology that is facing off with new competitors in the storage space.
Until a more reliable form of data redundancy becomes available, RAID will likely continue to have a place in the storage market. The ability of RAID 6 to withstand two drives failing makes it an appealing option, and disk vendors are recommending RAID 6 and 10 for larger workloads. Storage capacity growth is another factor to watch when considering the future of RAID 5. An increase in storage density that isn't met by better performance will result in a lengthy rebuild. And with so many variations of RAID available to fix the mistakes of earlier configurations, better options are likely to appear down the road.
Please check the box if you want to proceed. Ransomware recovery may not have always been a featured topic in TechTarget's 20 years of coverage, but it's certainly made an Data replication can play a big role in a disaster recovery plan, so make sure you're familiar with the different types of The only way to know for sure that your disaster recovery plan will work is to test it.