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Full Discussion: SAN/LVM question
Operating Systems Linux Red Hat SAN/LVM question Post 302534935 by msarro on Wednesday 29th of June 2011 07:47:23 AM
Old 06-29-2011
The p2000 has gotten a bit of a dust off from the MSA2k series, thank god. They no longer require downtime to add additional shelves (verified by HP) on any of the platforms.

The logs need to be kept around for at least a few days (our operations team will be firing some scripts off at them for data mining purposes). However after that I don't see a reason why they couldn't get moved to a different location and gzipped (after say 30 days).

Each RAID 5 is currently split up into about 5 different LUNs, so none of the LUNs will be larger than 1TB a piece. Each one will be a PV, and those will get put together as VG's for each type of server (well for the two primary server types, then one for db backups, one for cross site backups, and finally one vg for the other server types). So no single PV should be larger than 1.5TB.

That's a really good point about the spare. I hadn't thought about that when I was designing it. I'm not sure if it will be possible to sacrifice the additional storage space, but if archiving after, say, 30 days is possible I'm pretty sure that will free up more than enough storage. We do have 4 hour/24x7 support from HP under our contract with them so we should be covered for speedy hardware replacements. Sadly the SNMP implementation for the P2000 isn't the best.

I actually went to a bunch of vendors and the issue was no one had a system that could run on DC power except HP. They tried to sell us a P4000 SAN, which is in fact a P2000 back end with a DL380 on the front, and that's it (it may run their proprietary storage software or something, not sure). So we found out the parts and put it together ourselves. Dell has pretty much no DC offerings, and everything from Hitachi fell well outside my budget for the storage requirements. We don't currently have a business relationship with IBM for that to have been considered (basically have to stick with the approved vendor list).

Any other advice? I appreciate everyone's feedback. Its looking like there are placers where my original design was over engineered and places where it was underengineered. Sadly I don't have access to storage specialists who aren't vendors so peer review of my design can't happen too well in house Smilie
 

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dspam_maintenance(1)						   User Commands					      dspam_maintenance(1)

NAME
dspam_maintenance - remove old signatures and unimportant tokens from the DSPAM storage backend SYNOPSIS
dspam_maintenance [--profile=PROFILE] [--logdays=no_of_days] [--signatures=no_of_days] [--neutral=no_of_days] [--unused=no_of_days] [--hapaxes=no_of_days] [--hits1s=no_of_days] [--hits1i=no_of_days] [--without-sql-purge] [--with-sql-automatization] [--with-sql-autoup- date] [--purgescriptdir=directory] [--with-all-drivers] [--verbose] DESCRIPTION
dspam_maintenance is used to remove old signatures/tokens and unimportant tokens from the DSPAM storage backend and purge old log entries in user and system logs. This script can be called from the command line or run from within cron. Either add a line in your crontab or add this script in your cron.{hourly,daily,weekly,monthly}. Running this script every hour might not be the best idea but it's your decision if you want to do so. OPTIONS
--profile=PROFILE Specify a storage profile from dspam.conf. The storage profile selected will be used for all database connectivity. NOTE: See dspam.conf for more information. --logdays=no_of_days All log entries older than no_of_days days will be removed. NOTE: Default is 31 days. (for more info: man dspam_logrotate) --signatures=no_of_days All signatures older than no_of_daysdays will be removed. NOTE: Default value is set by the PurgeSignatures option in dspam.conf, if this option is not set, the default value is 14 days. This option is only used for the Hash driver. --neutral=no_of_days Deletes all tokens from the target users database whose probability is between 0.35 and 0.65 (fairly neutral, useless data). NOTE: Default value is set by the PurgeNeutral option in dspam.conf, if this option is not set, the default value is 90 days. --unused=no_of_days Remove stale tokens which have not been used for a long period of time. NOTE: Default value is set by the PurgeUnused option in dspam.conf, if this option is not set, the default value is 90 days. --hapaxes=no_of_days Remove tokens with a total hit count below 5 (which will be assigned a hapaxial value by DSPAM). NOTE: Default value is set by the PurgeHapaxes option in dspam.conf, if this option is not set, the default value is 30 days. --hits1s=no_of_days Remove tokens with a single SPAM hit. NOTE: Default value is set by the PurgeHits1S option in dspam.conf, if this option is not set, the default value is 15 days. --hits1i=no_of_days Remove tokens with a single INNOCENT hit. NOTE: Default value is set by the PurgeHits1I option in dspam.conf, if this option is not set, the default value is 15 days. --without-sql-purge Do not use SQL based purging. Only run dspam_clean. NOTE: Default is off (aka: use SQL based purging). --with-sql-optimization Run VACUUM (for PostgreSQL/SQLite) and/or OPTIMIZE (for MySQL). NOTE: Default is off (aka: do not use optimizations). --with-sql-autoupdate Run SQL based purging with purge day values passed to dspam_maintenance. NOTE: Default is off (aka: do not attempt to modify SQL instructions). --purgescriptdir=directory Space separated list of directories where to search for SQL files used for the SQL based purging. --with-all-drivers Process all installed storage drivers (not just the active driver). NOTE: Default is true (aka: process all installed drivers). --verbose Verbose output while running maintenance script. EXIT VALUE
0 Operation was successful. other Operation resulted in an error. Run the script with --verbose to get more information about error. COPYRIGHT
Copyright (C) 2002-2010 DSPAM Project All rights reserved. For more information, see http://dspam.sourceforge.net. SEE ALSO
dspam(1), dspam_admin(1), dspam_clean(1), dspam_crc(1), dspam_dump(1), dspam_logrotate(1), dspam_merge(1), dspam_stats(1), dspam_train(1) dspam_maintenance Apr 26, 2010 dspam_maintenance(1)
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