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тАО06-22-2005 04:06 PM
тАО06-22-2005 04:06 PM
LTO3 library speed
I would like to know if someone is using LTO3 and how fast can he backup?
I bean told that LTO3 is too fast for single thread writing. I need to have multiplexing in order to feed the tape at 80MBps.
I bean told that LTO3 is too fast for single thread writing. I need to have multiplexing in order to feed the tape at 80MBps.
3 REPLIES 3
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тАО06-22-2005 06:31 PM
тАО06-22-2005 06:31 PM
Re: LTO3 library speed
Hi,
I have not yet used any LTO3 device but have done a lot of benchmarks with LTO2.
I belive you are right, in the "real world" it will be very hard to feed one LTO3 drive using only one data stream but, it may be possible if:
- Unix backup.
- Fast CPU.
- Very fast disk system.
- Large files or rawdisk backup.
I have not yet used any LTO3 device but have done a lot of benchmarks with LTO2.
I belive you are right, in the "real world" it will be very hard to feed one LTO3 drive using only one data stream but, it may be possible if:
- Unix backup.
- Fast CPU.
- Very fast disk system.
- Large files or rawdisk backup.
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тАО06-23-2005 04:57 PM
тАО06-23-2005 04:57 PM
Re: LTO3 library speed
tody i am using 4 lto2 tape and the 100baseT network is limiting me. i started to migrate to 1000baseT and the test on LTO2 show i get the maximum 2.5 GBpm.
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тАО06-24-2005 09:19 AM
тАО06-24-2005 09:19 AM
Re: LTO3 library speed
Arie,
In a new setup I reach a throughput of 100 GB/hour in a SAN based file system backup to LTO3 drives with DataProtector.
So the throughput is about the same as with a LTO2 drive, the metadata is probably slowing down the process.
The 80 MB/s will be very hard to reach even with a high concurrency.
best regards,
Kurt
In a new setup I reach a throughput of 100 GB/hour in a SAN based file system backup to LTO3 drives with DataProtector.
So the throughput is about the same as with a LTO2 drive, the metadata is probably slowing down the process.
The 80 MB/s will be very hard to reach even with a high concurrency.
best regards,
Kurt
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