3 ms·

At data copy rate of 100 MB/s taking a backup from one of these drives takes 50 hours.

• tecleandor 6y ago
  Where did you get that? The specs table says: Sequential Data Transfer Rate (host to/from drive) 281 MB/s
  • magicalhippo 6y ago
    For comparisons sake, my 14TB Toshiba MG07ACA14TE drives get effectively ~260MB/s outer rim to ~180 MB/s inner rim.
• tlamponi 6y ago
  Besides the fact that your BW is off a factor of 2.81, which would bring it to ~18.65h, note that: * That's why they are often rather on the receiving end of backups ;-) * Are often in RAID10 systems, for redundancy/uptime + performance, roughly doubling their bandwidth * Delta syncs/backups exists and thus normally only something like tens to hundreds of GiB need to be actually read, that can be done i way less than an hour Depends naturally on the whole setup and actual workload, but if you have a high data rate change between backup times you may want to go for a SSD only system using ZFS or Ceph or the like (again depending on actual use case) which could do both cheap differential syncs.
• infofarmer 6y ago
  In a usual medium-to-large cloud configuration where 3-5 redundant copies of each chunk/file/object are randomly and thinly spread across hundreds or thousands of drives, a loss of a single 18TB drive would result in a few minutes of «redundancy repair». No RAIDs would be harmed in the process.