Re: [Networker] Data Compression
2003-07-07 16:47:06
A 110/220 tape is 110 native 220 under best case compression. I too have
these drives, and get 85 to 175 gb depending on data backup. Depending
because there are time which I back up compressed data (gzipped, tarred,
cpio, or compressed), and others where just plain text which gets great
compression.
-----Original Message-----
From: Mukesh Ghildiyal [mailto:MGhildiyal AT WYSE DOT COM]
Sent: Monday, July 07, 2003 3:29 PM
To: NETWORKER AT LISTMAIL.TEMPLE DOT EDU
Subject: [Networker] Data Compression
Hello networker partners,
I have a data compression issue. Let me tell what I have
Library : Storagetek L180 with 6 SDLT drives
Server: HPUX 10.20
Connnection: 2 HSC scsi cards connecting to 6 drives (3 each) and one HPPB
card attached to Jukebox
Tapes: SDLT (Fuji & Maxell) says 160gb/320gb SDLT 320 and 110gb/220gb SDLT
220
My question is:
I believe we are at SDLT 220 and I am backing up to this library my oracle
application and database. I am not using software compression and depend on
hardware compression I have drives configured as
/dev/rmt/c2t2d0BESTnb
When I backup I am only getting 140gb in each tapes whereas I expect at
least 200 to 220 gb per tape. Please let me know if there is any setting at
the library to achieve the required compression or at the O/S level???
Thank you very much in advance.
Mukesh
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