VMware CLOUD DIRECTOR 1.0 Manual de usuario descargar pdf (Pagina 9)

PERFORMANCE STUDY /9

VMware vCloud Director 1.0 Performance and Best Practices

LDAP Sync Latency on a High Latency Network

This test determines how much of a delay to expect for an LDAP sync operation when the external LDAP server’s

Active Directory contains a large number of users (10,000).

When the vCloud Director server is connected to the external LDAP server through a high latency network (for

example, DSL, Satellite, or T1), the sync latency increases linearly as shown in Figure 4.

This experiment did not limit the network bandwidth. If the available network bandwidth were also limited, the

LDAP sync latency might further increase.

Figure 4. LDAP Sync Latency for Round-Trip Time (RTT) with 10,000 LDAP Users = 1ms, 100ms, and 200ms

Performance Tips

To speed up the time it takes for vCloud Director to initially import LDAP users from an external LDAP server, we

recommend importing the groups first instead of importing individual users. When a group is imported, all users

in that group will be able to log into the vCloud Director server. The vCloud Director server automatically imports

the user information during the login process.

We also recommend that you infrequently run LDAP sync on the external LDAP server. When a LDAP user is

initially imported, for any subsequent login, vCloud Director syncs up this user with the external LDAP server. The

LDAP user information in the vCloud Director server database is always up to date, except if a user is deleted in

the LDAP server. A LDAP sync operation will disable the user as "out of sync" from the vCloud Director database

when a user is removed remotely.

0 50 100 150 200 250

Latency in Minutes

RTT in Milliseconds

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 31 32

Sin comentarios

VMware CLOUD DIRECTOR 1.0 Manual de usuario Pagina 9