currently i'm restoring data to a Windows NAS share, but the performance with large files is very bad...
When restoring 200 GB of files with a size of a few MB i got a restore speed of 900 MB/Min in ARCserve.
When restoring some large files with a size of 20-30 GB the restore speed goes down to 250 MB/Min.
This bad performance i got too, when copying a single file from a local windows host the the nas. A 26GB file takes more than one hour, in the Windows Task-Manager the network is at 6%.
Why is there a so big difference between many small files and one big file?
I tryed to restore the files with the built in BrightStor Backup Agent, but this seems not to work. Last thursday evenig i mailed already the support, because i can't made a backup. I hope they can tell me monday how i get this work.
Is there something i can optimize to get a better performance with large files?
I think this can't be a problem with the write speed of the disks, because many small files are written down with a higher speed.
Bad performance with large files on NAS
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