Which backup medium is readily available at reasonable prices and can store more data than DVDs?

Which backup medium is readily available at reasonable prices and can store more data than DVDs?

• A. External hard drives
• B. Tape drives
• C. Optical discs
• D. NAND flash memory

Answer: (A)

Backing up data efficiently means choosing media that is easy to buy, affordable, and offers enough space. External hard drives meet that: they’re widely available, come in large capacities (hundreds of gigabytes up to several terabytes), and have a low cost per gigabyte. This lets you store far more data than a stack of DVDs without breaking the bank, and you can back up quickly with simple copy operations. Tape drives can hold a lot but are less accessible for everyday backups and require more equipment. Optical discs like DVDs are inexpensive but offer far less capacity per disc. NAND flash memory is fast and durable but becomes expensive for large backups compared with external hard drives. So external hard drives best fit being readily available at reasonable prices and storing more data than DVDs.

Backing up data efficiently means choosing media that is easy to buy, affordable, and offers enough space. External hard drives meet that: they’re widely available, come in large capacities (hundreds of gigabytes up to several terabytes), and have a low cost per gigabyte. This lets you store far more data than a stack of DVDs without breaking the bank, and you can back up quickly with simple copy operations. Tape drives can hold a lot but are less accessible for everyday backups and require more equipment. Optical discs like DVDs are inexpensive but offer far less capacity per disc. NAND flash memory is fast and durable but becomes expensive for large backups compared with external hard drives. So external hard drives best fit being readily available at reasonable prices and storing more data than DVDs.