Pro+ Content/Storage magazine

Thank you for joining!
Access your Pro+ Content below.
Vol. 7 No. 1 March 2008

Ask the Expert:RAID rebuilds

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 this Pro+ Content for Free!

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

Features in this issue

  • Arrays score with both file and block storage

    Multiprotocol arrays that support block- and file-based storage through a single controller give users the best of both worlds: NAS for file-based information, and Fibre Channel or ISCSI block-based storage for databases and other transactional apps.

  • Case study: NY Mets add deduplication to roster

    With an extensive lineup of corporate data, photos and video, the Mets needed to recruit some backup help. The call went out for low-cost disk backup configuration, including deduplication and compression to reduce the amount of data to be backed up, as well as WAN optimization/acceleration to speed up the replication process. After much consideration, Data Domain was drafted for the job.

  • Ask the Expert:RAID rebuilds

    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?

Columns in this issue

SearchSolidStateStorage

SearchVirtualStorage

SearchCloudStorage

SearchDisasterRecovery

SearchDataBackup

-ADS BY GOOGLE

Close