White Papers

BP1018 Sizing and Best Practices for Citrix XenDesktop with Dell EqualLogic Storage 27
Figure 12 Total IOPS on the EqualLogic pool
We verified that system resource utilization at the ESXi layer and Citrix infrastructure layer were within
the acceptable limits as defined in the section 4.4. More than 94% of the desktops were represented as
‘GOOD” performing desktops by Stratusphere UX. The Stratusphere UX scatter plot is shown in
Appendix D .
The test results for both one array and two array configurations are summarized in Table 5.
Table 5 IOPS in two array test
Number of
PS6010XVS
arrays
Number of Blade
M610 servers
Number of
virtual desktops
IOPS (Steady
state)
1
8
630
4500
2
16
1270
9000
These results show that almost linear scaling could be achieved by adding additional EqualLogic array
members when there is no bottleneck on other infrastructure components.
5.6.2 Login storm I/O
All 1270 users were pre-booted and the users were able to login to the virtual desktops within first 25
minutes. Around 12400 IOPS were observed cumulatively on both EqualLogic arrays in the pool.