Hi,
Three questions here about LTO-3 drive speeds.
LTO-3 has a reported write speed of 80MB/s native, LTO-2 40 MB/s and
LTO-1 20 MB/s.
Obviously, the advertised write speeds for LTO-3 assume you can feed
data to the drive buffer fast enough, but:
1. How fast can LTO-3 drives read LTO-3 tapes?
2. Is the read speed increase over LTO-2 drives the same factor as LTO-2
drives were over LTO-1 drives?
Just trying to understand if the read speeds have also been doubling
with each generation of drive.
3. Since the read speeds of LTO-3 drives are surely faster than with
LTO-1 drives, how much higher
could multi-plexing be increased versus with LTO-1 drives and still get
similar recover times?
Say, you had target sessions set to 4 under LTO-1, and you were seeing
decent recover times. Could
you expect to see similar recover times using LTO-3 drives and tapes if
you had target sessions set to, say,
12, assuming everything else stayed the same as far as the save sets and
their sizes.
Thanks.
George
--
George Sinclair - NOAA/NESDIS/National Oceanographic Data Center
SSMC3 4th Floor Rm 4145 | Voice: (301) 713-3284 x210
1315 East West Highway | Fax: (301) 713-3301
Silver Spring, MD 20910-3282 | Web Site: http://www.nodc.noaa.gov/
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