Thank you Mr. Sims,
The results show compression... Could anything else be out of line?
root@fsphnsm1-on-[/]
%lsattr -E -l rmt1
mode yes Use Buffered Writes
True
block_size 0 Block Size (0=Variable Length)
True
compress yes Use Hardware Compression on Tape
True
autoload no Use Autoloading Feature at End-of-Tape
True
logging no Activate volume information logging
True
max_log_size 500 Maximum size of log file (in # of entries)
True
space_mode SCSI Backward Space/Forward Space Record Mode
True
rew_immediate no Use Immediate Bit in Rewind Commands
True
trailer_labels no Trailer Label Processing
True
retain_reserve no Retain Reservation
False
emulate_auto no Use Random Mode to Emulate Autoloader Tape Drive
True
limit_readerp no Limit Read Error Recovery Time to 5 Seconds
True
fail_degraded no Fail Tape Operation if Degraded Media is Detected
True
devtype 03590E1A Device Type
False
mtdevice Library Device Number
True
prime_parent scsi1 Primary SCSI Parent
False
prime_id 0 Primary Target ID
False
alt_device Alternate Device Name
False
alt_parent Alternate SCSI Parent
False
alt_id Alternate Target ID
False
root@fsphnsm1-on-[/]
%
John Talafous
-----Original Message-----
From: Richard Sims [mailto:[EMAIL PROTECTED]]
Sent: Friday, October 13, 2000 2:03 PM
To: [EMAIL PROTECTED]
Subject: Re: 3590 tape compress question
>We have a 3466-C00, AIX 4.3.2 and TSM 3.7.1. We have a 3494 library with
>3590E1A drives with extended length capability. I changed the DEVCLASS for
>the tapes to 3590E-C. I then performed an EXPIRE INVENTORY and lowered
>reclamation thresholds....
...
>I may be dealing with the wrong type of data, but I see no compression
here.
John - Use the AIX command '/usr/sbin/lsattr -E -l rmt1'
and see what it has for "compress". TSM *should* have
set this to "yes". (I wonder if you may have to delete and
redefine the drive for the new setting to be employed?)
I'll assume that the client is not compressing the data, either
via TSM client settings or utilities employed on files, and that
extended length tapes are being used.
Richard Sims, BU
