LaCie Thunderbolt drive and Time Machine Question

Discussion in 'Mac Accessories' started by PatriotInvasion, Jan 26, 2013.

  1. PatriotInvasion macrumors 65816

    PatriotInvasion

    Joined:
    Jul 18, 2010
    Location:
    Boston, MA
    #1
    So I am currently backing up to a 1TB LaCie Thunderbolt drive and a 1TB Time Capsule. I'm wondering why the Backups.backupdb folder is contained within a sparsebundle disk image on my Time Capsule, but not on my LaCie drive.

    On the LaCie drive, the backup folder just sits on the drive unencrypted. Any idea why?

    -----
    Also as a side note, why does the Thunderbolt drive claim to get up to 10GB/second and it never comes anywhere remotely close to that? It's fast, but more like 1GB every 10 seconds when copying from my rMBP's SSD to the HDD of the Thunderbolt drive.
     
  2. simsaladimbamba

    Joined:
    Nov 28, 2010
    Location:
    located
    #2
    That has to do with how Time Machine handles network and local backups. Network backups get stored in that disk image, local backups get stored in folders and files.
    Time Machine FAQ

    The limiting factor is the HDD, most available mass produced HDDs have a limit of 130 MB/s and less, you would need to put about ten HDDs into a RAID 0 to get 10 Gb/s, or use two S-ATA 6.0 Gbps (S-ATA III) SSDs in RAID 0.
     
  3. PatriotInvasion thread starter macrumors 65816

    PatriotInvasion

    Joined:
    Jul 18, 2010
    Location:
    Boston, MA
    #3
    Thanks for the link. Hmm, I don't know much about RAID set ups. Seems a little too advanced for my needs. But, if I had sprung for the LaCie Thunderbolt SSD instead of the higher capacity HDD, would the actual speeds copying from the rMBP to the external SSD be significantly faster?
     
  4. simsaladimbamba

    Joined:
    Nov 28, 2010
    Location:
    located
    #4
    Yes, the transfer would be five to six time faster, depending on what you copy (50 GB of data spread onto 50,000 files of 1 MB each copies slower than 50 GB in one file).
     

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