Re: [Networker] Networker Newbie
2006-03-24 11:45:27
When a tape is loaded into the drive, execute the following command ("mt
-f" followed by your tape drive path) to see if hardware compression is
enabled:
mt -f \\.\tape0 stat
You should get output similar to what is shown below:
\\.\tape0:
Media Capacity = 18.63GByte
Media Remaining = 10.56GByte
Media Blocksize = 0
Media Partition Count = 1
Media is not write protected
default blocksize = 65536
maximum blocksize = 1048576
minimum blocksize = 1
MaximumPartitionCount = 1
Partition = 0
Logical block position = 1162124
EOTWarningZoneSize = 0
CompressionEnabled
<=================================Compression is enable for me=====
Features:
Performs SHORT erase operation
Performs LONG erase operation
Performs IMMEDIATE erase operation
Can report maximum tape capacity
Can report amount of tape remaining
Support FIXED block length mode
Support VARIABLE block length mode
Returns errors on write if tape is write - protected
Performs Hardware Error Correction
Supports hardware data compression
Can provide current absolute device block address
Can provide current logical block address and partition
Can physically load and / or unload tape
Support PREVENT / ALLOW Media Removal
Performs IMMEDIATE rewind operations
Allows Setting FIXED LENGTH or VARIABLE block sizes
Performs IMMEDIATE Load / Unload operations
Allows hardware data compression to be enabled /
disabled
Can position tape to an absolute physical block
Performs IMMEDIATE absolute block positioning
Can position tape to a logical block(and partition)
Performs IMMEDIATE logical block positioning
Can position tape to END of RECORDED DATA
Can perform tape record positioning(backwards /
forwards)
Can perform tape file positioning(backwards / forwards)
Can move backwards across records or filemarks or
setmarks
Can write FILEMARKS
Performs IMMEDIATE tape mark write operations
I actually can get over 600GB on our LTO-2 tapes when backing up
Databases as they compress easily. Shown below is the output from mminfo
querying last nights backup jobs from one of our servers.
volume written
ARN391L1 620 GB
ARN392L1 277 GB
PS2375L2 365 GB
PS2377L2 202 GB
Thanks,
Dana
-----Original Message-----
From: Legato NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU]
On Behalf Of rrevuru AT GMAIL DOT COM
Sent: Friday, March 24, 2006 10:48 AM
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Subject: Re: Networker Newbie
> Can you tell me the what kind of compression ratio should i use to
> make
use
> of the maximum space on the tape. I am currently using LTO-Ultrium-2.
The compression ratio isn't something you can control - you get the best
that your hardware can give.
> When coming to compressing data . according to research i did so far,
> compression is achieved from the client side (Networker User).
No this is just one way. You have a choice of compressing the data at
the client side, or letting the compression hardware in your tape drives
do the work.
Davina: Thanks for your response, can you shed some more light onto
compression from your hardware in your tape drives. I was wondering if
there is any setting on the tape drives i should take care of.
Peter gave me a good insight, i was wondering if there is anything i
should be taking care of
I am more concerned about the following error message
********************************
I am using Networker 7.2 Windows Version. Here is what i have
As i said i have 8-tape Auto-Loader. Of that i have 6 slots filled with
6 tapes.
2 of those tapes are 200 GB/ and 4 of them are 100GB uncompressed.
Right now this what is shows in the volumes tab
Written Used expiration date
------------------------------------------------------------------------
-----
tape1 : 78GB full 03/31/2006
tape2: 49GB full 03/24/2006
tape3: 34GB full 10/26/2006
tape4: 64GB full 03/31/2006
tape5 110GB full manual
tape6 130GB full manual
To sign off this list, send email to listserv AT listserv.temple DOT edu and
type "signoff networker" in the body of the email. Please write to
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-----Original Message-----
From: Legato NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU]
On Behalf Of rrevuru AT GMAIL DOT COM
Sent: Friday, March 24, 2006 10:48 AM
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Subject: Re: Networker Newbie
> Can you tell me the what kind of compression ratio should i use to
> make
use
> of the maximum space on the tape. I am currently using LTO-Ultrium-2.
The compression ratio isn't something you can control - you get the best
that your hardware can give.
> When coming to compressing data . according to research i did so far,
> compression is achieved from the client side (Networker User).
No this is just one way. You have a choice of compressing the data at
the client side, or letting the compression hardware in your tape drives
do the work.
Davina: Thanks for your response, can you shed some more light onto
compression from your hardware in your tape drives. I was wondering if
there is any setting on the tape drives i should take care of.
Peter gave me a good insight, i was wondering if there is anything i
should be taking care of
I am more concerned about the following error message
********************************
I am using Networker 7.2 Windows Version. Here is what i have
As i said i have 8-tape Auto-Loader. Of that i have 6 slots filled with
6 tapes.
2 of those tapes are 200 GB/ and 4 of them are 100GB uncompressed.
Right now this what is shows in the volumes tab
Written Used expiration date
------------------------------------------------------------------------
-----
tape1 : 78GB full 03/31/2006
tape2: 49GB full 03/24/2006
tape3: 34GB full 10/26/2006
tape4: 64GB full 03/31/2006
tape5 110GB full manual
tape6 130GB full manual
To sign off this list, send email to listserv AT listserv.temple DOT edu and
type "signoff networker" in the body of the email. Please write to
networker-request AT listserv.temple DOT edu if you have any problems wit this
list. You can access the archives at
http://listserv.temple.edu/archives/networker.html or via RSS at
http://listserv.temple.edu/cgi-bin/wa?RSS&L=NETWORKER
To sign off this list, send email to listserv AT listserv.temple DOT edu and
type "signoff networker" in the
body of the email. Please write to networker-request AT listserv.temple DOT edu
if you have any problems
wit this list. You can access the archives at
http://listserv.temple.edu/archives/networker.html or
via RSS at http://listserv.temple.edu/cgi-bin/wa?RSS&L=NETWORKER
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Re: [Networker] Networker Newbie, Albert Eddie Contractor AFRPA CIO/IT
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