- Uncompressed
data size in LTO-7 is 6TB. So, as per current scenario our backup can be
completed in very few numbers of tapes and in half of the current backup
time at the speed of 300MB/s offered for LTO-7.
- LTO
7 is better for long term retention due to low cost of tape media.
- Issue
in recovery time, media management cost, backup window and total cost of
ownership at high end
- Mobility-
It is very easy to pick up a box of tape cartridges and ship them from production
location to an offsite location.
- It takes more time in seeking data
- Disk based
backup is more reliable in comparison of LTO tapes as study shows that
most restoration from tape fails.
- Compared to tape, disk-based backup appliances
allow to perform backups faster and efficiently, as well as to restore
data far more rapidly than from tape. With disk systems, data
integrity is catered for by RAID protection also.
- It gains efficiency
from de-duplication. This process removes duplicate copies of saved data
to free up space. De-duplication means we can store data
more
quickly and perform full backups less often
| COMPARATIVE CHART OF PRICE AND PERFORMANCE FOR TAPE AND
DISK |
Chart indicates that once we start getting into higher performance
requirements to meet the backup window, then disk-based solutions are better.
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