1. Video Security Design Workshop:
vicon-security.com
Video Security Design Workshop:
Video Storage Design
Vicon A&E Summit 2011

2. Storage Solutions

3. Storage Solutions 2010 Storage – Why should you care? Storage primer
HDD technology
RAID levels & descriptions
Storage topologies
Vicon storage product overview
SATA-Boy
SATA-Beast
AutoMAID
Competitive overview
Conclusion

4. Storage – Why should you care?
Storage is at the core of what we do…
Capture & transmit Information
2. Safely store it
3. Retrieve it upon demand

5. Storage – Why should you care?
Storage demand is outpacing cost reduction
More, More, More!
Megapixel cameras accelerate this trend
Quantum leap in demand
Storage vendors are penetrating the DVS market
If you specify a proprietary
storage system…

6. WHO??? Who will guarantee total system performance?
Who will provide end-user support?
Who will ensure compliance with local regulations for:
Frame rate
Retention
Image quality?
These questions require better understanding of storage products, architectures & topologies

7. HDD and Buss Technologies
IDE/ATA
SATA – Serial ATA
SCSI- Small Computer System Interface
Fiber Channel
SAS – Serial Attached SCSI
SATA Connector
SCSI Connector

8. RAID – Redundant Array of Independent Discs
RAID LEVELS
Description
RAID 0
Striping, no parity
RAID 1
Mirroring or duplexing
RAID 10
Mirrored striping
RAID 3
Byte-level striping with dedicated parity disk
RAID 4
Block-level striping with a dedicated parity disk
RAID 5
Block striping with parity
RAID 6
Block striping with dual parity

9. RAID 0 – Striping, No Parity (error detection)M I Q B F J N R C G K O S D H L P T

10. RAID 1 – Mirroring or DuplexingB D C E A B C D E F G H I J F G H I J = =
Mirrored Pair
Mirrored Pair

11. RAID 10 (0 + 1) Mirrored StripingC G E I B D F H J A C E G I B D F H J =
Striping
Striping
Mirroring

12. RAID 5 – Block Striping with Distributed Parity
Generator
Server A3 A2 A1 A0
P4 PARITY B4 B1 B0 C4 D4 D2 D3 E2 E3 E1 C3 C0 B3 C1 D0 E4
P3 PARITY
A Blocks
B Blocks
C Blocks
D Blocks
E Blocks

13. RAID 6 – Block Striping, Dual Parity
XOR Parity
Generator
(P)
ECC code
Generator
(Q) P Q
Server
Q3 PARITY A2 A1 A0
P4 PARITY B4 B1 B0 C4 D4 D2 D3 E2 E3 E1 C3 C0
Q2 PARITY
Q1 PARITY
Q0 PARITY
Q4 PARITY
P3 PARITY
P2 PARITY
P1 PARITY
A Blocks
B Blocks
C Blocks
D Blocks
E Blocks

14. RAID Controllers Software RAID – OS-based disc controller Advantages:
Low Cost – no hardware required
Cost-effective alternative for small server environments
Disadvantages
Dependant upon OS for all storage functions
Shares CPU processing cycles with OS and other apps
Proprietary to specific OS
Not scalable to enterprise-class data centers

15. RAID Controllers Hardware RAID – the Gold Standard Advantages
Purpose-built device off-loads major workload
Requires no server/CPU resources
Supports multiple HDD formats
Can support many operating systems simultaneously
Provides non-volatile cache – protects against data loss during loss of power
Disadvantages
Usually higher cost than SW or FW RAID

16. Direct Attached Storage (DAS)
Usually a 1-to-1 ratio of server-to-array
Usually SCSI attached
Server
RAID Devices
LAN

17. External Storage Topologies
Direct Attached Storage (DAS)
Advantages
Most simple and widely used external storage
Very cost effective
Uses reliable, time-tested SCSI buss
Can use low-cost COTS HW (dumb RAIDs)
Disadvantages
Cannot be switched
Cannot share arrays between servers/NVRs
SCSI distance limitations of meters
No remote access
Not highly scalable

18. External Storage Topologies
Network Attached Storage (NAS)
NAS is a network appliance which can allow file sharing and storage across the LAN or WAN
NAS stores specific files – not blocks of data
NAS resources are identified by drive letter
A NAS device is a file server
Server
NAS Device
LAN

19. External Storage Topologies
Network Attached Storage (NAS)
Advantages
Most cost-effective external storage topology
Uses existing LAN for connectivity
Can use low-cost COTS hardware
Disadvantages
Dependant upon LAN for all storage file transfers
Must run OS-based file protocol (NFS, Win…)
Not usually enterprise-class for availability
Not highly scalable
Possible CPU choke point
Not usually good fit for mass data transfer – like DVS

20. External Storage Topologies
Storage Area Network (SAN) Fiber Channel
Server
FC Switch
LAN
Storage Array
Server
Fiber or Copper

21. External Storage Topologies
Fiber Channel SAN
Advantages
Very fast block level data transfer
Requires no server/CPU esources
OS agnostic
Highly fault tolerant
Highly scalable
Disadvantages
Higher cost than NAS or DAS
Distance limitations
Fiber channel devices are expensive and complex

22. External Storage Topologies
Storage Area Network (SAN) iSCSI
Server
GB Ethernet
Switch
LAN
iSCSI over Ethernet
Server
Server
Storage Array

23. External Storage Buss iSCSI SAN Advantages Disadvantages
Requires no server/CPU resources
Uses standard Ethernet componentry
GB Ethernet & NIC devices
Highly Scalable
More cost-effective than FC in many applications
Disadvantages
Still subject to certain Ethernet overhead (70% rule)
Not as high throughput or redundancy as FC Fabric

24. External Storage Topologies – iSCSI SAN

25. Small form-factor, 2U rack Up to 16TB storage RAID protected
Shadow Extended Storage NVR
Small form-factor, 2U rack
Up to 16TB storage
RAID protected
8 hot swap HDDs

26. SataBoy Very cost-effective up to 28TB Nexsan Based Products
14 drive SATA RAID system
2x2x2Gb FC host ports
2x2x1Gb iSCSI host ports
Up to 4GB of cache
Hardware RAID 6
Multiple RAID types, sets and LUNs2.0)
Very cost-effective up to 28TB

27. SataBeast - 84TB in 4RU Highest density in the industry!
Nexsan Based Products
SataBeast - 84TB in 4RU
Highest density in the industry!

28. SataBeast Nexsan Based Products 42 drive SATA RAID system
84TB with 42 2TB drives
Anti-vibration design maximizes drive reliability
2x2x4Gb FC host ports
2x2x1Gb iSCSI host ports
Up to 4GB of cache
Hardware RAID 6
Multiple RAID, types sets and LUNs2.0)

29. Conclusion Highest Performance - Highest Capacity – Highest Density
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