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  • hard disk drive (HDD)

    In a personal computer, a hard disk drive (HDD) is the mechanism that controls the positioning, reading, and writing of the hard disk, which furnishes the largest amount of data storage for the PC. Although the hard disk drive (often shortened to "ha... 

  • RAID shopping


  • RAID levels: Learn about RAID 50

    RAID 50 combines striping with distributed parity for higher reliability and data transfer capabilities. Learn more about this RAID level in this short educational tip. 

  • Tech Report: Flexible RAID arrays


  • Accommodating arrays

    Modern storage arrays offer disk types to meet any need -- costly Fibre Channel (FC) disks for high-end applications requiring superior performance and availability, and lower-priced SATA disks for less-critical data. The arrays also come with mixed ... 

  • RAID-10: Two great RAIDs that go great together

    Learn about the differences between RAID1+0 and RAID0+1. 

  • Ten misunderstood IT terms

    In storage, even the simplest of terms can get confused. Check out our list of commonly misunderstood terms and see if you're on top of the IT word game. 

  • Calculating available disk space in a RAID-5 set

    Learn how to calculate disk space availability for five 36 GB disks using RAID-5. 

  • Calculating space for parity in RAID-5

    Brett Cooper offers advice to a reader who asked: "What are the calculations for RAID-5 in regards to the amount of space parity will consume? For instance, if I have a RAID-5 with 10 146 GB drives, what is the percent factor of space used for parity... 

  • Which is better: Cheap mirroring or RAID?

    Want to avoid the cost and complexity of RAID? Mirroring is one option to consider.