Need help on Tape,Optical disk...
Hi,
Right now we are looking for the relaibility study of the disk, tape, magneto-optic disk etc. which are primarily involve in the mass storage. Our requirement is any of the tape or above device data to predict the relaibility. I'll deeply appriciate if anyone can help me out to get the data or pointer. Thanks & Regds, Babi |
Need help on Tape,Optical disk...
Previously babi wrote:
Hi, Right now we are looking for the relaibility study of the disk, tape, magneto-optic disk etc. which are primarily involve in the mass storage. Our requirement is any of the tape or above device data to predict the relaibility. I'll deeply appriciate if anyone can help me out to get the data or pointer. What volumes are you looking at? What timeframe? As for MOD, there basically is no reliability study. It gives you the media rated bit-error probability (extremely low) and 50 years lifetime for that probability. Nobody knows how long these media live. A Phillips enginner once told me they think 80 years, but that the accelerated ageing models get shaky for that number. However, MOD is limited to 2.3GB/disk for 3.5" (5.25" is 5GB, but not as common, so I would advise to use 3.5"). For the other optical formats only DVD-RAM has any reasonable reliability, look to what the vendors publish about their meda. As for tape, you can believe what the vendors tell you, as long as it is professional tape (i.e. not QUIC or DAT). Arno |
Need help on Tape,Optical disk...
In article ,
Arno Wagner wrote: Previously babi wrote: Hi, Right now we are looking for the relaibility study of the disk, tape, magneto-optic disk etc. which are primarily involve in the mass storage. Our requirement is any of the tape or above device data to predict the relaibility. I'll deeply appriciate if anyone can help me out to get the data or pointer. What volumes are you looking at? What timeframe? As for MOD, there basically is no reliability study. It gives you the media rated bit-error probability (extremely low) and 50 years lifetime for that probability. Nobody knows how long these media live. A Phillips enginner once told me they think 80 years, but that the accelerated ageing models get shaky for that number. However, MOD is limited to 2.3GB/disk for 3.5" (5.25" is 5GB, but not as common, so I would advise to use 3.5"). For the other optical formats only DVD-RAM has any reasonable reliability, look to what the vendors publish about their meda. As for tape, you can believe what the vendors tell you, as long as it is professional tape (i.e. not QUIC or DAT). Arno There's some info on DVDs here; http://www.itl.nist.gov/div895/carefordisc/ -- a d y k e s @ p a n i x . c o m Don't blame me. I voted for Gore. Proudly then, even more so in hindsight. |
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