--- On Mon, 5/24/10, Perera,Sriyanjit <PereraS@tz.cdc.gov> wrote:
From: Perera,Sriyanjit <PereraS@tz.cdc.gov>
Subject: RE: FW: Proposed WP Sessions to Complete Final Document: Thursday at 11 am
To: "Juma Lungo" <jlungo@yahoo.com>, arthur@hisp.org, "Dr. Honest Christopher Kimaro" <honest_c@yahoo.com>
Cc: jrubona@yahoo.com, "Sarah Emerson" <sarahemerson@gmail.com>
Date: Monday, May 24, 2010, 9:13 PM
Juma,
Thank you for this, I guess I am trying to understand what
the ideal configuration would be for the national server.
When you say various servers I assume you mean everything
from regular desktop computers to larger, multi processor,
large memory servers?
Have any of the other countries been able to provide
guidance on what is required for a national installation
that needs to exchange data with regional and district
installations? When we end up with 133 district
installations, 21 regional installations and 6500 facilities
trying to submit data via IVR or SMS the national data
warehouse server will be busy.
In these larger 'national' installations are there
advantages/disadvantages with different OS or relational
database options?
Does the current system support full redundancy? Will you
need to change the relational database if this becomes a
requirement? Someone mentioned an installation of a national
server using a server at MOHSW. Does this server have
appropriate anti-virus and backup functionality?
As the number of users accessing the system simultaneously
increases I would expect the server requirements to
increase. Have you been able to articulate what kind of data
connectivity you would like. I would think the data
link to the MOHSW would be a limiting factor for a while
until we can really build up the ICT capacity there. Are you
able to help articulate this and relate it to the Tanzania
national installation requirements. How much data is
transferred to and from the server during a regional or
district 'synching'?
Sorry if these questions are basic or misinformed and sorry
to bombard you with so many. Just trying to improve my
understanding. We are all in agreement that the vision is to
set a path for this to be maintained and operated by the
MOHSW within their premises. As we discussed I want to
understand the extent to which the system would require or
benefit from a temporary, 1-2 years, offsite hosting
arrangement that provides improved system availability,
improved physical and environmental security, improved data
transmission capacity, reliability of data connectivity,
automated monitoring of all applications, servers, network
devices and communication services 24*7*365, etc.
Regards
Sri Perera
Mr. Sriyanjit Perera
HMIS Advisor
CTS Global, Inc.
Assigned to: The Centers for Disease Control Prevention
Phone: +255 (0) 22 212 1440/1442 ext. 8409
Mobile: +255 (0) 755 32 55 64
From: Perera,Sriyanjit <PereraS@tz.cdc.gov>
Subject: RE: FW: Proposed WP Sessions to Complete Final Document: Thursday at 11 am
To: "Juma Lungo" <jlungo@yahoo.com>, arthur@hisp.org, "Dr. Honest Christopher Kimaro" <honest_c@yahoo.com>
Cc: jrubona@yahoo.com, "Sarah Emerson" <sarahemerson@gmail.com>
Date: Monday, May 24, 2010, 9:13 PM
Juma,
Thank you for this, I guess I am trying to understand what
the ideal configuration would be for the national server.
When you say various servers I assume you mean everything
from regular desktop computers to larger, multi processor,
large memory servers?
Have any of the other countries been able to provide
guidance on what is required for a national installation
that needs to exchange data with regional and district
installations? When we end up with 133 district
installations, 21 regional installations and 6500 facilities
trying to submit data via IVR or SMS the national data
warehouse server will be busy.
In these larger 'national' installations are there
advantages/disadvantages with different OS or relational
database options?
I think Jason may provide some of these answers as he writes up based
on his experience in Zambia.
I think in terms of a "supported" enterprize configuration we may be
gravitating towards ubuntu server with postgres as that is where the
skills seem to be clustered around.
Does the current system support full redundancy? Will you
need to change the relational database if this becomes a
requirement?
Postgres can be setup with warm standby which should adequately meet
the disaster recovery requirements of the ministry.
Someone mentioned an installation of a national
server using a server at MOHSW. Does this server have
appropriate anti-virus and backup functionality?
As the number of users accessing the system simultaneously
increases I would expect the server requirements to
increase. Have you been able to articulate what kind of data
connectivity you would like. I would think the data
link to the MOHSW would be a limiting factor for a while
until we can really build up the ICT capacity there. Are you
able to help articulate this and relate it to the Tanzania
national installation requirements. How much data is
transferred to and from the server during a regional or
district 'synching'?
I'll leave others to provide some typical stats here.
Sorry if these questions are basic or misinformed and sorry
to bombard you with so many. Just trying to improve my
understanding. We are all in agreement that the vision is to
set a path for this to be maintained and operated by the
MOHSW within their premises. As we discussed I want to
understand the extent to which the system would require or
benefit from a temporary, 1-2 years, offsite hosting
arrangement that provides improved system availability,
improved physical and environmental security, improved data
transmission capacity, reliability of data connectivity,
automated monitoring of all applications, servers, network
devices and communication services 24*7*365, etc.
Good questions. What is being proposed here - that the national
database (and dhis webapp?) is hosted offsite? Some vpn setup such as
openvpn will definitely be required here.
Regards
Bob
···
On 26 May 2010 13:07, Juma Lungo <jlungo@yahoo.com> wrote:
--- On Mon, 5/24/10, Perera,Sriyanjit <PereraS@tz.cdc.gov> wrote:
Regards
Sri Perera
Mr. Sriyanjit Perera
HMIS Advisor
CTS Global, Inc.
Assigned to: The Centers for Disease Control Prevention
Phone: +255 (0) 22 212 1440/1442 ext. 8409
Mobile: +255 (0) 755 32 55 64