Access Time Issues
All the jukeboxes work best when only a few users need to access the discs at the same time. Small jukeboxes have only one or two CD, DVD, UDO or Blu-ray drives, so only one or two users can share the jukebox at the same time. If additional users want to use a new disc, they have to wait for the disc to be swapped by the robotics in the jukebox. This takes from 4 to 9 seconds. Larger jukeboxes have six or more readers, so more users can simultaneously access the different discs at the same time. A more efficient recommendation is to have a disk cache attached to the jukebox for a higher number of simultaneous users. This way, the configuration operates in a FILO (First In Last Out) Manner. Here, files accessed are only sent back to the optical discs after they have been utilized. Changes may or may not be saved or versioned based on the user configuration and accessibility settings on the storage management software that runs the optical jukebox. The number of drives in the jukebox can be up to 6 depending on the size of the jukebox. The drives will read and write the data to the RAID / Disc cache and then present to end users. This way the 4–6 seconds read time only occurs during the initial data read process, then the data is sent to the cache.
Read more about this topic: Optical Jukebox
Famous quotes containing the words access, time and/or issues:
“Lesbian existence comprises both the breaking of a taboo and the rejection of a compulsory way of life. It is also a direct or indirect attack on the male right of access to women.”
—Adrienne Rich (b. 1929)
“Every time an ashtray is missing from a hotel, they don’t come looking for you. But let a diamond bracelet disappear in France and they shout John Robie, the Cat. You don’t have to spend every day of your life proving your honesty, but I do.”
—John Michael Hayes (b.1919)
“How to attain sufficient clarity of thought to meet the terrifying issues now facing us, before it is too late, is ... important. Of one thing I feel reasonably sure: we can’t stop to discuss whether the table has or hasn’t legs when the house is burning down over our heads. Nor do the classics per se seem to furnish the kind of education which fits people to cope with a fast-changing civilization.”
—Mary Barnett Gilson (1877–?)