• No results found

DEMS v3.5 Considerations

N/A
N/A
Protected

Academic year: 2021

Share "DEMS v3.5 Considerations"

Copied!
11
0
0

Loading.... (view fulltext now)

Full text

(1)
(2)

DEMS v3.5 Considerations

Description The intention of this document is offer information to assist decision

makers in their IT requirements for DEMS.

Document Number

RVL1011

Version 1.1

Date 26 November 2014 Author Alaa Abouzeid

Document History

Version Change Notes Author

1.0 First Issue for Release of DEMS v3.5 A. Whibley 1.1 Reviewed number of connected cameras A. Abouzeid

Approval History

Version: 1.0 1.1 Author: AW AA Position: IT SPM Reviewed by: RW RW Position: CPO CPO Approved by: AF AF Position: CEO CEO

Reveal Media Ltd. Endeavour II Becketts Wharf,

Lower Teddington Road, Hampton Wick,

Surrey KT1 4ER

Helpdesk Tel: ++(0)788 591 2207 Email: helpdesk@revealmedia.com

(3)

Contents

Introduction ... 4

DEMS v3.5 Installation Considerations ... 5

DEMS Installation Requirements ... 5

DEMS Pre-Installation Considerations/ Minimum Requirements... 5

Hardware Recommendations ... 5

DEMS Editions ... 6

DEMS Prerequisites ... 7

System Considerations ... 8

DEMS Enterprise software support ... 9

General principles ... 9

Access to IT systems required during installation. ... 9

Access to IT systems (support purposes) ... 10

Access to IT systems required during installation. ... 10

DEMS Characteristics ... 11

DEMS Folders (File[s] Storage Conventions) ... 11

DEMS Services (Windows Services) ... 11

(4)

Introduction

What is DEMS?

DEMS is the industry leading digital evidence management platform built on Reveal technology that has been used for over a decade by Police Forces, Local Authorities, Security Services and Prisons in 30 countries worldwide.

DEMS is powerful enough to securely store, manage and export any amount of digital evidence, large or small, whilst always remaining incredibly simple and easy to use.

Why use DEMS?

DEMS allows you to:

 Securely store all videos with a unique digital fingerprint.

 Keep track of any action performed in the system or on the stored videos with an extensive audit trail attached to all digital evidence.

 Password control access to content and features plus for active directory support.

 Securely export digital evidence and deliver it quickly where you want and in the way you need.

 Burn evidential digital media as a DVD or CD file, or export directly to your network.

DEMS is easy to set up, incredibly simple to use and easy to manage; automated processes allow users to simply plug in a camera and let DEMS do the rest. This design philosophy allows all of the benefits of body worn cameras to be realised without placing a burden on your organisation.

(5)

DEMS v3.5 Installation Considerations

DEMS Installation Requirements

Type(s) Description

Environmental

Requirements Cameras: Up to 18 cameras simultaneously (docking cradle) Product Dependencies Client OS:Server OS: XP  Windows 8.1 2003  2012

Database: Microsoft SQL Server 2005 (minimum)

Build Requirements Client: C:\Program Files (x86)\Reveal Media

Installation

Server Roles: Application, Web (IIS) + Support Management Tools + Metabase Compatibility + BITS + Desktop Experience + Windows PowerShell

Client(s): DEMS Codes for Windows XP OS Computers Windows Media Player 11 for Windows OS PC’s IMAPI Service for Windows XP Computers

Storage

DEMS Video Footage Folder Conventions

Root: Non-Evidential Videos

Secroot: Videos classified as evidence (evidential)

LowRes: Videos (evidential or normal) with a lesser quality to review on restricted low bandwidth. Used in Enterprise and Hybrid installations

DEMS Pre-Installation Considerations/ Minimum Requirements

Spec(s) Description – Pre Installation Considerations

HDD Minimum 410 MB for installing DEMS application

Install 1.2GB for installing DEMS prerequisites applications

Time Admin account required to install DEMS

Install Note

25 Minutes (i3 Processor with 5mbps www connection - Downloading the prerequisites applications - Installing the prerequisites applications

- Installing DEMS: It is recommended that DEMS would be installed on a new machine that doesn’t have any instances of SQL Server

Hardware Recommendations

DEMS consists of a Database and server and the hardware speed requirements are proportional to the number of users accessing the system simultaneously. Again there are many factors to consider but you can never really have too much of a good thing when it comes to memory and processor speed. When managing a handful of cameras, our clients have run DEMS on modern laptops quite happily

.

(6)

DEMS Editions

Specification(s) Standalone Mode Workgroup Mode Enterprise Mode Hybrid Mode

Definition

A single computer will be used. Files can be stored either on this computer or on an external device

2 or more computers are connected through a mini network, where one of these computers is considered a server and the others are clients. Files can be stored either on this computer or on an external device.

A Server with many client PCs connected to it over a wide area network. The database is installed on the central server or on a dedicated database server. Files can be stored either on the central server or on an external device.

A central server is connected to two or more sites, where the sites are mini networked separately. Cameras can be used across different sites but videos can only be viewed on the site they were uploaded in. Each site has a gateway computer and multiple client computers. Storage is per site and it can be either on the gateway computer or on an external device.

Recommended Operating systems

Windows 7

Ultimate Windows 7 Ultimate

Windows 2008 R2 Server SE for the server and Windows 7 Ultimate for the clients

Windows 2008 R2 Server SE for the server and Windows 7 Ultimate for the gateways and clients Supported Operating systems Windows XP SP3 and above

Windows XP SP3 and above

Windows server 2003 R2 family (except Web Edition) and above for server, and Windows XP SP3 and above for clients

Windows server 2003 R2 family (except Web Edition) and above for server, and Windows XP SP3 and above for gateways and clients

Hardware Consideration

 Intel/AMD CPU 2Ghz  Memory 4 GB

 DVD±RW (for DVD burning)

 Hard drive. * (Size dependent on usage)

**(Fault tolerant raid 5 array highly recommended)

 3 x USB2 ports (for uploading up to 18 cameras using docking stations)  Video card capable of playing HD video

Recommended Network

connectivity

N/A

Multiple Ethernet cables with a hub or router connecting the computer Through the organization’s existing network infrastructure

The central server is connected to the different sites through the

organization’s existing network infrastructure. We recommend you set the internal connection within the sites to be using a dedicated network.

(7)

DEMS Prerequisites

Spec(s) Description – Pre Installation Considerations

Prerequisites software

Common for all computers:

 Microsoft .NET Framework 2.0 and 4.0  Visual C++ redistributable 2008 x86 For Server computers:

 Microsoft SQL Server (min SQL Server 2005) with Management Studio Install the following server roles:

 Application Server  Web Server (IIS)  .NET Framework 3.5.1

 Web Server (IIS) Support Management Tools → IIS 6 Management Compatibility → IIS 6 Metabase Compatibility

Install the following server roles:

 Background Intelligence Transfer Service (BITS)  Desktop Experience

 Windows Powershell For Client Computers:

 DEMS codecs for Windows XP computers

 Windows Media Player 11 for Windows XP computers  IMAPI service for Windows XP computer

Storage and network bandwidth

For the following Parameters:  16 Cameras

 Cameras are set to 720p resolution

 Average number of minutes recorder per shift: 25 minutes  Percentage of evidential material: 30%

 Number of days to keep evidential\Non-evidential: 180\31 days  Available bandwidth (MBs)

(Max should be about 65 for a 100Mb network): 65

Then you will need around 3TB of storage, and will need 24 hours to transfer 195 hours of material through the network. For more

(8)

System Considerations

DEMS consists of a Database and server and the hardware speed requirements are proportional to the number of users accessing the system simultaneously. Again there are many factors to consider but you can never really have too much of a good thing when it comes to memory and processor speed. When managing a handful of cameras, our clients have run DEMS on modern laptops quite happily.

Operating Recommendations

It is essential that your force policies and procedures are adhered to when handling such material and we highly recommend that your information security and IT staff are

involved in establishing appropriate data protection and backup procedures.

It is advisable to make a risk assessment regarding how resilient your hardware and backup/restore facilities should be.

Things to consider: Operating

Considerations Operating Recommendations / Description

DRP / BCP How long you can afford to have the system inoperable owing to system failure or disaster.

Disc Failure

This can be mitigated by using a ** Raid array for the operating system, database and storage. Raid 5 is a popular choice and many raid controllers allow the failed disc to be replaced (“hot-swapped”) without the system being powered down. Note that the disc array is vulnerable whilst a disc being replaced and the raid array rebuilt. Most of our clients consider this to be a minimum protection level and the hardware quoted above has this facility.

Data Backups

Most forces have well thought our policies regarding the backup of critical material which can include regular backups of the media and database using dedicated backup facilities that are not in the same vicinity. This provides significant protection in the case of local fire or flood etc. Some forces regard the fact that evidence is burned to disc promptly as being sufficient. Backup to an external hard drive regularly will provide a certain level of protection if this cannot be brought under normal IT procedures for some reason. Such discs can be bought from a variety of vendors including Buffalo and Netgear etc.

Other Hardware Failure

There are many things that can go wrong with a computer but in most cases the data remains intact and the system can be up and running again once the fault has been rectified either by the supplier or internal staff.

Support

You should stipulate a support arrangement with the vendor that provides the cover that you require. A “return to base” contract may be inappropriate owing to the sensitivity of the material likely to be on the system.

(9)

DEMS Enterprise software support

General principles

Reveal Media do not alter client’s infrastructure other than the DEMS server and DEMS SQL databases. We will advise where we think changes could be made (i.e. removal of anti-virus scanning on certain folders) and may request small specific changes that are required for overall system operation.

We take care to avoid holding personal information. For example it is the responsibility of our clients to remove any sensitive information from a screen shot that may accompany an email to our support department.

For some support reasons we may need access to media that has been stored within DEMS at the customer’s facilities but we will not remove any data from the site without the customer’s permission. We will not disclose the contents of media to any third parties and will keep access to a relevant minimum within Reveal Media staff members. We are not responsible for backups of customer’s data, we will however help relevant staff in advising them of the appropriate backup steps to take.

Access to IT systems required during installation.

IT Areas Access to IT systems required during installation

Active Directory

Reveal Media will NOT alter active directory accounts: a member of the customer’s staff must be provided for altering Active Directory accounts and groups. The installation process would be expected to create some role accounts for services, groups for authorisation and have access to test user accounts for final testing of the installation.

SQL Server

Typically IT staff create a database and Reveal Media have unrestricted access to this database during installation. If this is not possible we usually can work with a member of staff to perform the initial installation under supervision.

DEMS Server

During installation we would expect to have local (temporary) administrative access to the DEMS server. We may install and configure windows server components (i.e. IIS, .net 4.0, Desktop experience) which are required by DEMS as pre-requisites along with DEMS. We would NOT be responsible for issuing SSL certificates within your domain for the IIS portion of DEMS

Media Storage

During installation we would expect to have access to the media being used to store materials from DEMS to create the required file system structures.

DEMS Client PC’s

Again during installation we would expect to have administrative access to the client PCs or the initial client PCs that will be duplicated for rollout. Typically this is so we can install any codecs and system pre-requisites such as Microsoft .net 4.0 on the PC. We would not normally install more than two PCs for testing purposes; any further machines would be the responsibility of the IT department

Firewalls

There may be a requirement to open ports, under normal circumstances DEMS uses ports 80 and 8080 to communicate, and these ports may need to be

unblocked. Reveal Media will NOT unblock firewall ports: a member of staff must be provided to configure this

(10)

Access to IT systems (support purposes)

IT Areas Access to IT systems required during installation

Active Directory Access

We would NOT expect to have access to Active Directory during support. We may however ask members of staff to confirm group membership of end user accounts for us.

SQL Server

We NOT expect to have access to the database post installation; however we may ask support staff to run limited SQL queries for us to help with diagnosing problems. These queries would NOT normally have any identifiable user data with the exception of user account names.

Event Logs

We would expect to be able to ask support staff for copies of the windows event log entries that DEMS generates during operation. These do NOT normally contain personally identifiable information (although for example user identities may be exposed i.e. user names in paths such as “c:\users\Alice”). It is the customer’s responsibility to redact any sensitive information prior to Reveal Media receiving it.

Debug trace screens and errors

We would expect support staff to be able to forward these to us. As per the event log, it is the customer’s responsibility to redact any sensitive information prior to Reveal Media receiving it.

Access to IT systems required during installation.

Access to client / server systems – In general DEMS will generate sufficient diagnostic information for Reveal Media to avoid needing direct access to these systems.

Remote access can be advantageous to support the system in a timely manner.

We will NOTalter other systems (i.e. disabling firewalls or anti-virus) without consulting with the customers IT dept.

We may however alter the Reveal Media programs running on the system without direct consultation.

We will inform the IT department of the changes we have made if requested. We will usually require some IT staff support to give us sufficient rights to perform suitable diagnostics.

(11)

DEMS Characteristics

DEMS Folders (File[s] Storage Conventions)

Folder(s) Description (DEMS File/Folder Conventions)

Root Non-Evidential Videos

Secroot Videos classified as evidence (evidential)

LowRes Videos (evidential or normal) with a lesser quality to review on restricted low bandwidth. Used in Enterprise installations.

DEMS Services (Windows Services)

DEMS Services Description of Role (DEMS Windows Services)

DEMS Auto

Uploader Move videos from their camera to the local cache. First stage of uploading videos into DEMS system. Verifies video integrity

DEM Sync Service

Monitors BITS folder for any video drop to register them in DB, to generate their thumbnail and move them into their final folder according to their evidence flag.

DEMS Sec

Service Move videos from evidential folder when flagged or unmarked as such

DEMS Web Service Host Service

Interface between DEMS UI and DB or storage; also any actions between cameras and DEMS

DEMS XCoder

Service Transcode videos to low resolution. Used in enterprise and hybrid editions

DEMS Architecture Type

Ref# Description of Role

Stand

Alone A single computer will be used. Files can be stored either on this computer or on an external device such as external drive or NAS device

Workgroup

2 or more computers are connected through a mini network, where one of these computers is considered a server and the others are clients. Files can be stored either on this computer or on an external device.

Enterprise

A central server is connected to two or more sites, where the sites are mini networked separately. Cameras can be used across different sites but videos can only be viewed on the site they were uploaded in. Each site has a gateway computer and multiple client computers. Storage is per site and it can be either on the gateway computer or on an external device.

Hybrid

A Server with many client PCs connected to it over a wide area network. The database is installed on the central server or on a dedicated database server. Files can be stored either on the central server or on an external device.

References

Related documents

[r]

Objective: The current study aimed to determine the effects of biofeedback on decreasing blood glucose levels and tension and increasing the quality of life in diabetic

The purpose of this study is to determine whether the circulating markers of iron status, including serum iron, ferritin, TIBC, and transferrin saturation, differ between

Data from one of three representative experiments ( a ) or cumulative of six independent experiments ( b ) are shown.. hypothesized that the target cells may differ in their ef-

[r]

foreign policy and national security objectives, Meyer Sound seeks to better educate its employees regarding OFAC sanctions and has adopted comprehensive written OFAC

Large genetic and genomic resources are available in sorghum, and resequencing of diverse germplasm resources including the mini core collection and wild and weedy relatives

Group 2: Unemployment rate for districts with low public sector employment share in 1996, districts that experienced the highest increase in unemployment rates between 1996 and