Ok -    not enough detail to see what your issue is - eg how much data
does it fit on each tape? Do you use drive hardware compression? How
fast is your network?   How good is your storage node? Scsi or FC?


But in general...    LTO1 compression doesn't cope well with encrypted
data - so your data is probably transferred to the drive at no more than
the tape raw write speed. Maybe less than that even.

The raw speed on LTO1 is 20MB/sec, the raw capacity is 100GB, so best
performance for uncompressible data is 2 hours to fill a tape, you could
have network and/or bus bandwidth issues and you could also be
shoe-shining you drives by not delivering data to it fast enough..  

If you must encrypt then try and find a way that compresses before
encrypting, or do it in one process...   And no, before you ask, you
can't make the networker client do both compression and encryption of
data.
 

> -----Original Message-----
> From: EMC NetWorker discussion 
> [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU] On Behalf Of mallard20
> Sent: Wednesday, 30 April 2008 1:40 AM
> To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
> Subject: [Networker] writing to tape
> 
> I currently use an HP Storageworks 1/8 Autoloader Ultrium 
> LTO1 jukebox.  I have my data encrypted and it is currently 
> take 4+ hours to write the data to each tape.  Any ideas of 
> why it is taking so long to write this data to tape?  Any 
> help is greatly appreciated.

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