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Storage Area Network (SAN session Day-2)

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Storage Area Network (SAN session Day-2)

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Storage Area Network (SAN session Day-2)

  1. 1. SAN Introduction – Day2
  2. 2. Agenda  Thin and Thick Provisioning  Deduplication  High Availability  Virtualization  LUN assignment  Networking  Zoning 2
  3. 3. Thin Provisioning Definition-:A thin-provisioned volume is a volume for which storage is not set aside up-front. Instead, the storage for the volume is allocated as it is needed.
  4. 4. Thick Provisioning Definition-: In virtual storage, thick provisioning is a type of storage allocation in which the amount of storage capacity on a volume is pre-allocated on physical storage (aggregate) at the time the volume is created.
  5. 5. NetApp Deduplication Deduplication refers to the elimination of redundant data in the storage. In the deduplication process, duplicate data is deleted, leaving only one copy of the data to be stored. However, indexing of all data is still retained should that data ever be required. De- duplication is able to reduce the required storage capacity since only the unique data is stored.
  6. 6. Introduction of Storage Area Network
  7. 7. High Availability High availability means the amount of time the network services and data are accessible. In many enterprises ensuring data availability at any time and at any place is the highest priority.
  8. 8. Benefits of HA Data access at anytime Nondisruptive OS upgrade and hardware upgrade The nondisruptive upgrade method can be used to replace or upgrade the following components 1.The storage system 2.Motherboard 3.Adapters 4.Nonvolaile RAM(NVRAM) 5.Disks 6.Other network interface components
  9. 9. Multi-Tenancy; What is it? Shared infrastructure: hardware and software Administrative isolation and control Supporting multiple “tenants” (users, customers, etc.) from single shared infrastructure while keeping all data isolated and secure Customers concerned with security and privacy require secure multi-tenancy – Government agencies – Financial companies – Service Providers – Etc. 14
  10. 10. Secure Multi-tenancy for virtualized environments Solution The only validated solution to support end to end multitenancy across application and data Data is securely isolated from virtual server, network, to virtual storage
  11. 11. Introducing MultiStore Creates multiple system partitions (vFiler units) on a single NetApp storage system. Each vFiler unit is secure (Data owned by one vFiler unit can’t be accessed by any other vFiler unit though they are hosted on a same physical storage system) 16
  12. 12. Multistore and Vfiler A logical partition of N/W and storage resource in Data ONTAP called multistore and it provides a secure storage consolidation solution. When enabled, the Multistore license creates a logical unit called vFiler0 which contains all of the storage and network resources of the physical FAS unit. Additional vFilers can then be created with storage and network resources assigned specifically to them. What is Vfiler ? A lightweight Instance of Data ONTAP Multi protocol server and all the system resource are shared b/w Vfiler units. -Storage units in the vfilers are Flexvols and Qtrees -Network Units are IP Address, VLAN, VIFs, aliases and IPspaces -Vfiler units are not hypervisors –vfiler resource cannot be accessed and discovered by any other vfiler units
  13. 13. Multi store configuration: Up to 65 secure partitions (vFiler units) on a single storage system (64+vfiler0) IP Storage based (NFS,CIFS & iSCSI servers) Additional storage and n/w resource can be moved, added or deleted NFS, CIFS, iSCSI, HTTP, NDMP, FTP, SSH and SFTP protocols are supported -Protocols can be enabled / disabled per vFiler -Destroying a vFiler does not destroy data
  14. 14. What Makes MultiStore Secure? – IPspaces – Administrative separation – Protocol separation – Storage separation An IPspace has a dedicated routing table Each physical interface (Ethernet port) or logical interface (VLAN) is bound to a single Ipspace A single IPspace may have multiple physical & logical interfaces bound to it Each customer has a unique IPspace Use of VLANs or VIFs is a best practice with IPspaces
  15. 15. File Services Consolidation
  16. 16. Application Hosting
  17. 17. Always-On Data Mobility No planned downtime for-: Storage capacity expansion Scheduled maintenance outages Software Upgrades
  18. 18. FC Switch
  19. 19. Fabric Address MAC address in networking is 48 bit like in SAN fabric address is 24 bit address. 01:EF:03:12:08:ef (12*4=48 bit MAC for NIC) Fabric Address(24bit)-: Domain ID : Area ID : ALPA 8 bit 8 bit 8 bit We have decimal numbers -0 -9 Hexadecimal-0-9,A,B,C,D,E,F,10 to 1F,20 to 2F,F0-FF
  20. 20. Fabric Address 26 01-EF address are used for addressing and F0 and FF are reserved. EF= E * 161 + F * 160 =14 * 16 + 15 * 1 =239 So we can connect 239 switches in a single fabric but domain ID will be different for each switch Area- 8 bit address given to each port so 28 = 256 (Max) ports First port address is 0 and last is EF Example-16 ports, 32 ports ..etc. ALPA- Arbitrated loop physical address 8 bit address. Single port with multiple servers can be connected.
  21. 21. Fiber channel switch port interface Switch Ports E_Port :- Expansion port, two switches to make a fabric F_Port :- A fabric port to which an N-port attaches FL_port :- A fabric loop port which a loop attaches Device Ports N_Port :- Port designator for direct fabric attached devices. NL_Port :- Device that is attached to the loop (host and storage)
  22. 22. Fabric Address for Initiator & Target
  23. 23. NETWORKING Why FC is used in FC SAN? Advantage-: -FC carries multiple protocols and it also carries FC -Existing protocol can carry through FC -Carrying SCSI data through FCP called SCSI—FCP -Carrying IP data over FC called FCIP -Large connectivity (16 millions devices) -High performance and speed (16gb/sec) -Low latency (Latency in SAN Microseconds) Disadvantage-:Costly
  24. 24. FC LAYERS  FC0-Physical layer –understanding of physical components  FC1- 8b/10bEncoding and Decoding –Internal  FC2-Data delivery –Fragmentation  FC3-Common services –Advance components  FC4-ULP mapping (Upper level protocol mapping)
  25. 25. 31
  26. 26. ZONING Zoning= Opening a path between the N-ports How can we open the path? Zone can be implemented by-: 1.WWN zoning (Soft Zoning) 2.Port zoning (Hard Zoning)

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