Premium Content

Access "Ask the Expert:RAID rebuilds"

Published: 01 Nov 2012

Q: I run four 400GB SATA drives configured with RAID 5. I want to replace them with four 750GB drives. Can I rebuild and then swap individual drives? A: RAID rebuilds take quite a long time and are a resource-intensive operation, so expect your application to suffocate while this is happening. Rebuilds are a protection mechanism and aren't designed for data migration. Assuming your 750GB drives are sup-ported with your RAID adapter, the RAID group will only utilize the first 400GB of storage on each 750GB drive, leaving the remainder inaccessible. The usual way to migrate data with internal server-based storage is to copy the data to a separate set of drives or temporary storage, install the new drives and then copy everything back, remembering to preserve all file attributes. A tool like Robocopy can do this. --Ashley D'Costa, enterprise solutions architect, Mainland Information Systems Inc. Access >>>

Access TechTarget
Premium Content for Free.

By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy

What's Inside


More Premium Content Accessible For Free

  • Big data storage challenges: Speed, capacity and HDFS integration

    Big data infrastructure and analytics are some of the hottest technology topics today, and it can sometimes seem impossible to dissect and digest all...

  • Moving target: Endpoint backup

    Mobile workers are now accessing, creating and modifying data on ultra-portable devices such as smartphones, tablets and phablets. Most companies ...

  • A lesson in flash caching

    Solid-state storage is proliferating as a replacement for hard disk drives, where it offers a quick shift into the fast lane of storage processing. ...