UNIMI:Provisioning Services Stream Process Architecture
Server and Desktop Provisioning
Stream
A
Virtualize Store
Stream the workload image on-demand to virtual and bare-metal servers/Endpoints
Stream
Create a virtual image of a server’s or Desktop’s workload: OS, applications and configurationVirtualize
Store the virtual workload image on a network storage deviceStore
Using Citrix Provisioning Server for Desktops OS-streaming functionality, two Virtual Disks are created – one configured with the Windows XP operating system and software and one with Windows Vista and software. The vDisks are stored as files on the network.
Provisioning Server For Desktops
LAN-connected “diskless” workstation.No software pre-loaded and the systemis configured to boot from the network.
Provisioning Server For Desktops
Workstation is powered on.The XP operating system and software vDisk is streamed to the desktop using Citrix Provisioning Server for Desktops OS-streaming functionality.
Provisioning Server For Desktops
PC processing power is harnessed for an uncompromised user experience.
Workstation image delivery and management are centralised; data security is assured because there is no persistent storage at the desktop.
Provisioning Server For Desktops
Provisioning the workstation with the Vista vDisk is quickly accomplishedby rebooting.
Workstation image delivery and management are centralised; data security is assured because there is no persistent storage at the desktop.
Provisioning Server For Desktops
Network Storage
Provisioning Services
Target Device 3
Target Device 1
Target Device 2
Workloads
A
B
PXE Booting a Provisioning Services TargetDHCP Server
PXETFTP
BOOT
BOOT
BOOTDHCP Discover
DHCP Discover
DHCP Discover
IP InfoIP InfoIP Info
PXE InfoPXE InfoPXE InfoBootstrapBootstrapBootstrap
Failover & Login Process
1.1.1.1
1.1.1.2
1.1.1.3
1.1.1.4
Streaming from 1.1.1.4
X
Bootstrap1.1.1.2
1.1.1.1
Login Process
Request for vDisk3
PVS Target Device
StreamServer
1.1.1.3:vDisk3
Load balancing with High Availability (cont)
PVS2PVS1
X
Where to store the cache file in a HA environment
Cache on local RAM
Cache on Server Disk
Cache on Local Disk
Cache on Local RAM
Shared Storage
vDisks
SQL database
Cache
PVS1 PVS2
X
Cache on Local Disk
Shared Storage
vDisks
SQL database
Cache
PVS1 PVS2
X
Cache on Server Disk
Shared Storage
vDisks
SQL database
Cache
PVS1 PVS2
X
Cache on Server Disk (incorrect configuration)
Shared Storage
vDisks
SQL database
Cache
PVS1 PVS2
X
Possible single point of failure
Shared Storage
vDisksSQL database
Cache
PVS1
PVS2
TFTPDHCP PXE
Switch
Possible single points of failure
TFTP
Network
Storage
Bootstrap Delivery
TFTP Redundancy
• DHCP Option 66 only allows for one TFTP server to be entered.• Using TFTP Clustered Servers or PXE Service instead of DHCP
options will solve this issue.
Network Redundancy
PVS Server Target Device
Switch
PVS Server Target Device
Storage Redundancy
Type of Storage Pros Cons
CIFS on Windows Server
• Easy to setup• Free with OS
• Hard drives are cheap
• Performance due to SMB traffic• Lack of scalability
• HA requires two plus servers
CIFS on NAS Device
Easy to setup Device typically less expensive than SAN
device Built in redundancy for disks (depends on
vendor/model) Various vendors/models
•Less expensive solutions equal single
point of failure
• Scalability can be an issue depending
on vendor/model purchased
Storage Redundancy (continued)
iSCSI to NAS Device
Moderate to setup Device typically less expensive than SAN
device Built in redundancy for disks (depends on
vendor/model) Various vendors/models offer resiliency
benefits
•Less expensive solutions equal single point of failure
•Scalability can be an issue depending on vendor/model purchased
•Requires cluster file system when sharing LUN across multiple servers
iSCSI to SAN Device
•Highly scalable•Built in resiliency
•Build in features like storage replication and high performance disk arrays
•Moderate to complex to setup•Typically more expensive than NAS devices•Requires cluster file system when sharing LUN across multiple servers
Storage Redundancy (continued)
Fiber to SAN Device
•Highly scalable•Built in resiliency
•Build in features like storage replication and high performance disk arrays
•Complex to setup•Typically more expensive than NAS devices•Requires cluster file system when sharing LUN across multiple servers
Bootstrap Delivery Redundancy
Solution Pros Cons
DHCP Clustering • Less traffic on the network
•Moderate to setup• Multiple servers needed
• More expensive
Multiple PXE Servers
Easy to setup Less hardware needed.
•More broadcast traffic on the network
Soluzione per UNIMI - Centralized HA per LAB
vDisksTarget Devices
Shared Storage
Target Devices
Provisioning Servers
Provisioning Services
Target Device 50
Target Device 1
Target Device 2
HA
A
B
.................................
Workloads
LAB 2 2 provisioning servers & 50 Target
DevicesLAB 1 – 50 Target Devices
LAB 3 – 2 provisioning servers & 10 Target Devices + 10 Remote Desktop Linux
Network Storage
Soluzione per UNIMI completa
Proposta commerciale: LICENSING
- Lab1: 50 licenze XenDesktop Platinum per user- Lab2: 40 licenze XenDesktop Platinum per user- Lab3: 10 licenze XenDesktop Platinum per user
Proposta commerciale: PROVISIONING SERVERS (1)
- Lab1: 50 users (licenze citrix + 1y di sw assurance) 8.750,00 € (subscription ~ 60$ x lic)2 Server reali con XenSever in HA 6.600,00 €2 Server virtuali con Provisioning Sever 5.6SP1
- - Lab2: 40 users (licenze citrix + 1y di sw assurance) 7.000,00 € (subscription ~ 60$ x lic)2 Server reali con XenSever in HA 6.600,00 €2 Server virtuali con Provisioning Sever 5.6SP1
- - Lab3: 10 users (licenze citrix + 1y di sw assurance) 1.750,00 € (subscription ~ 60$ x lic)2 Server reali con XenSever in HA 6.600,00 €2 Server virtuali con XenDesktop 5
Proposta commerciale: PROVISIONING SERVERS (2)
6 x Server Reali:
DELL Server rack 1U PowerEdge R410 Processore: Processori 2x Intel Xeon E5506
Memoria: 24GB DDR3 1333MHz
Sistemi operativi - Opzioni di virtualizzazione: Citrix® XenServer®
HDD: 2x 146GB, SAS 3Gbps 15kRPM (hot plug)
Controller RAID: PERC H200A
Controller di rete: 6x Broadcom NetXtreme II 1GbE
Alimentazione: Ridondante 500 W
Proposta commerciale: NETWORK STORAGE
NetApp FAS2040-R5
- 24 x 450 GB (15K)
- 8 (4+4) porte 1 Gb- 4 (2+2) porte 8 Gb
Base Sw inclusi
Licenza CIFS-NFS
Garanzia 5y NBD
50.000,00€
Base pack comprende un set di funzionalità quali (Incluso) :
Snapshot™,FlexVol®,Thin Provisioning,RAID-DP®,FilerView®,FlexShare® , iSCSI, FCP,SyncMirrorNearStore®,Deduplication,System Manager,Operations Manager,HTTP, host utilities