Steven Jones wrote:
Hi,

Disk space isnt an issue as such as I thin provision the VMWare guest anyway so I can be 
fairly generous, 200gb is easy....the thing that interests me is splitting up the table 
spaces to different disks sets for instance  (/dev/sdb1, /devsdc1 etc, etc). Later then I 
can change raid types or spread out to different LUNS if there is a performance 
bottleneck on the fly....that's easy to do if the "backend" is broken up to 
different partitions on initial build...

Apparently the biggest increase will be seen if you move the transaction log. See http://docs.redhat.com/docs/en-US/Red_Hat_Directory_Server/8.2/html-single/Administration_Guide/index.html#Maintaining_Directory_Databases-Configuring_Transaction_Logs_for_Frequent_Database_Updates

rob


regards


________________________________________
From: freeipa-users-boun...@redhat.com [freeipa-users-boun...@redhat.com] on 
behalf of Rob Crittenden [rcrit...@redhat.com]
Sent: Tuesday, 10 May 2011 3:17 a.m.
To: d...@redhat.com
Cc: freeipa-users@redhat.com
Subject: Re: [Freeipa-users] Disk layout - requirements

Dmitri Pal wrote:
On 05/06/2011 11:58 AM, Sigbjorn Lie wrote:
On 05/06/2011 04:12 PM, Rob Crittenden wrote:
Steven Jones wrote:

Hi,

Digging through docs / googling I cant see any disk partition
suggestions and size thereof requirements...

Suggestions please?  sizing for 500 servers, 2000 desktops, 5000+
users...

Especially around having different sections of the IPA master of
different raid groups if that's needed...

It depends in part how you use IPA. A bare-bones user entry is about
1k, a host that has a certificate is about the same. There is some
amount of overhead in the DIT and you'll need to consider the space
for groups, how many kerberos services you'll deploy (also about 1k
in size) and what other features of IPA you'll use. We have quite a
few indexes into the data, that will take some room too.

I think additional RAM will be better than terabytes of disk. 389-ds
is going to try to cache much of this data, and with this number of
entries it can probably keep most if not all of the database in memory.

We haven't done any analysis on different FS performance.

Does that help?

rob

Would you consider these documents describing sizing and performance
tuning of the RH DS to be comparable/transferable to IPA?


http://docs.redhat.com/docs/en-US/Red_Hat_Directory_Server/8.2/html/Installation_Guide/Installation_Guide-Platform_Support.html#Installation_Guide-Platform_Support-Hardware_Requirements


http://docs.redhat.com/docs/en-US/Red_Hat_Directory_Server/8.2/html/Performance_Tuning_Guide/system-tuning.html




Yes these documents are applicable and can be used to tune up DS server
under IPA.

Be careful to note that in the first document the disk space assumptions
are for 100 byte entries and some (but not all) of the IPA entries are
10x that.

Thanks for the links Sigbjorn.

regards

rob

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