3 ms·
Tape has a tremendous density advantage over disks. Think about how much area a tape occupies if you were to completely unroll it, and compare that to a disk p
by rwmj 2y ago
Tape has a tremendous density advantage over disks. Think about how much area a tape occupies if you were to completely unroll it, and compare that to a disk platter. The flip side is access times are extremely long compared to disks, but for the usual application of backup and recovery that doesn't matter much. In this case they're pairing the tape with faster non-volatile storage so writes at least will be very quick (reads not so much, 2 minute access time!)
- dogma1138 2y agoThe 2min number is likely an average over a large volume of drives. An LTO 9 tape has over a kilometer(!) of tape in it. You can spool the tape only so fast without risking damage to either the tape itself or the cartridge so if your file is at the end of the tape you’ll be waiting for a while.
- Dylan16807 2y agoIt's a single tape. Even without any kind of fast forward, the write speed of LTO-9 is 6 meters per second. It takes three minutes to go completely end to end.