SA1 SLA Working Group.

This is the SA1 Working Group Wiki Page. Progress of the work been done so far can be found and reported here.

SLA Action Plan


SLA Metrics (Simple)

SLA Dependencies

SLA Metrics (DRAFT)

Collected Related Documents

All the relevant documentation can be found in:

The list of reference documents is:

  1. The SEEGRID draft SLA
  2. The WLCG MoU
  3. The BalticGrid Networking SLA

Summary of relevant SLAs/MoUs


  1. Hardware and connectivity criteria
  2. Level of support
  3. Level of expertise
  4. VO support
  5. Conformance to Operational Metrics


1. For Harware and connectivity criteria

2. For level of support

3. For level of expertise〈=&ROC=1

5. For monitoring Operational Metrics.


Levels of service are provided for Tier-1 and Tier 2 services

Host Laboratory Services

Tier-1 Services

Tier-2 Services

Grid Operation Services

Table with list of supported VOs

Minimal Computing Resources for participation

Network Connectivity

Storage availability

Minimum delay in responding to operational problems

Average availability measured over a period of time.

Provision of Grid Operations centers

User support facilities provision

Table with available and foreseen available computing power made available to the grid

The BalticGrid Networking SLA

1) Packet loss: < 0.1%

2) One-way delay between the BalticGrid resource centres is in the range of 20-50ms, but does not exceed 150 ms under any conditions.

3) MTU of at least 1500 bytes all along the traffic path.

4) Minimal jitter by avoiding extra routing/buffering hops on the path.

5) Traffic load does not exceed 75% of available bandwidth for more than 10% a month.

6) Available bandwidth should be increased so that traffic load does not exceed 50%.

Qos Levels:




Time scales for implementation of these levels of service defined.


Hardware Support Stuff

GridPP Supports Hardware Support Stuff

FTE Allocation defined for support stuff

Support Stuff should produce quarterly reports

Hardware Resources

Hardware resources should me made available to the Grid.

Table with offered hardware resources provided in the MoU

Availability of resources

Level of service agreed between Deployment Board and Tier 2 board

Provide support for VO but not installation and maintenance of experiment software

Monitoring of Hardware resources

Monitoring software provided by Grid PP

Installed at sites

Results should be public and available in a web sites

Target Shares

Overall target shares are defined by boards

Individual target shares are defined by Tier-2s


GridPP provides middleware releases

Timescale for deployment of software is decided by Tier-2 board

Network Connectivity

GridPP provides network monitoring software

Site agree to run this software

Security and availability

Defined by various boards


Reporting and information exchange procedures defined


1) Provide adequate computing and storage resources (and optional services where available). The farm size (at least 10 CPUs) and the storage capacity wil be settled by contractors involved;

2) Guarantee sufficient manpower in order to manage the site: at least 2 people and a minimum of 1 FTE are required;

3) Manage site resources efficiently: carry out m/w installation, perform updates, apply patches, properly modify configurations as requested by CMT and *within maximum time expected and agreed for the several operations.*

4) Take the responsibility and update the tickets assigned to the site within 24 hours (tier 2) or 48 hours (other sites) Monday to Wednesday.

5) Actively monitor the site, checking both resources and services status on a regular basis (using existing tools: GridICE, GSTAT, SAM, etc.)

6) Guarantee continuity to the support and management of the site, also during holidays in one of the following forms:

a. Local shift;

b. Delegate site management (with full access) to CMT;

c. Signal site downtime and close queues (only for the sites with no special INFN commitments);

7) Guarantee proper site-manager participation to fortnightly EGEE SA1 phone conferences and SA1/production grid meetings.

8) Keep site information on GOC-DB up-to-date;

9) Enable test VOs (infngrid, dteam and ops), giving them an higher priority than the one of other VOs

The EGEE Working SLA


-- Main.iliaboti - 20 Mar 2007

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Topic revision: r6 - 2007-08-10 - unknown
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