I am configuring 2000 seats XenDesktop 7 deployment these days.
1000 Hosted Shared Desktop, 500 Hosted VDI (Pool desktops), and 500 Hosted VDI with personal vDisk. I used NetApp VDI Sizer to get the work loads spread to NetApp FAS 3240 2 nodes cluster with 4 SAS 15K RPM 600 GB disk shelves. 
Also I listed the virtual storage servers and volumes below. You can put all these volumes in one virtual storage server if you want. Virtual storage server can separate different work load and give users more secure and flexible environment.
|
vSERVER |
VOLUME |
SIZE |
PROTOCOL |
Thin provisioning |
Dedupe |
Backup |
Node |
|
Infrastructure |
Infrastructure |
500GB |
NFS |
y |
Y, nightly |
Yes |
2 |
|
|
vdisk |
200GB |
iSCSI |
y |
Y, nightly |
Yes |
2 |
|
Hosted Shared |
Write Cache 1 |
2TB |
NFS |
y |
no |
no |
1 |
|
|
write cache 2 |
2TB |
NFS |
y |
no |
no |
1 |
|
Hosted VDI |
Write Cache 1 |
2TB |
NFS |
y |
no |
no |
2 |
|
|
write cache 2 |
2TB |
NFS |
y |
no |
no |
2 |
|
|
PvDisk |
6TB |
NFS |
y |
Y, nightly |
yes |
2 |
|
CIFS HomeDIR |
Hosted Shared |
2TB |
cifs |
y |
Y, nightly |
yes |
1 |
|
|
Hostedvdi |
1TB |
cifs |
y |
Y, nightly |
yes |
1 |
|
|
hostedvdiPvDisk |
1TB |
cifs |
y |
Y, nightly |
yes |
1 |
SAN boot Hypervisor is optional in any deployment.
