09-20-2011
RAID Hardware controllers might offer slight or significant performance ( it depend on the underlying algorithm that drive the controller ) when it comes to mirroring and stripping data across disks over pure SW RAID and LVM solutions.
RAID Controllers comes with extra cost.
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LEARN ABOUT DEBIAN
approx.conf
APPROX.CONF(5) File Formats Manual APPROX.CONF(5)
NAME
approx.conf - configuration file for approx proxy server
SYNOPSIS
/etc/approx/approx.conf
DESCRIPTION
Each non-blank line of the configuration file should contain a name/value pair, separated by white space. Comments start with a "#" char-
acter and continue to the end of the line.
Names that begin with the "$" character are reserved for use as configuration parameters. The following parameters are currently defined:
$cache Specifies the location of the approx cache directory (default: /var/cache/approx). It and all its subdirectories must be owned by
the approx server (see also the $user and $group parameters, below.)
$interval
Specifies the time in minutes after which a cached file will be considered too old to deliver without first checking with the remote
repository for a newer version (default: 60)
$max_rate
Specifies the maximum download rate from remote repositories, in bytes per second (default: unlimited). The value may be suffixed
with "K", "M", or "G" to indicate kilobytes, megabytes, or gigabytes per second, respectively.
$max_redirects
Specifies the maximum number of HTTP redirections that will be followed when downloading a remote file (default: 5)
$user, $group
Specifies the user and group that owns the files in the approx cache (default: approx)
$syslog
Specifies the syslog(3) facility to use when logging (default: daemon)
$pdiffs
Specifies whether to support IndexFile diffs (default: true)
$offline
Specifies whether to deliver (possibly out-of-date) cached files when they cannot be downloaded from remote repositories (default:
false)
$max_wait
Specifies how many seconds an approx(8) process will wait for a concurrent download of a file to complete, before attempting to
download the file itself (default: 10)
$verbose
Specifies whether informational messages should be printed in the log (default: false)
$debug Specifies whether debugging messages should be printed in the log (default: false)
The other name/value pairs are used to map distribution names to remote repositories. For example,
debian http://ftp.debian.org/debian
security http://security.debian.org
TCP PORT NUMBER
The port on which approx(8) listens is not specified in this file, but in /etc/inetd.conf. The default value is 9999, for compatibility
with apt-proxy(8), but it may be changed by running the command
dpkg-reconfigure approx
SEE ALSO
approx(8), approx-gc(8), inetd(8)
AUTHOR
Eric Cooper <ecc@cmu.edu>
Apr 2012 APPROX.CONF(5)