Mac OS X Server v10.6 Snow Leopard includes a new 64-bit kernel that increases performance and scalability on supported hardware. On hardware that supports the 64-bit kernel, you can choose whether to start up (boot) your server using the new 64-bit kernel or the earlier 32-bit kernel. Note: To determine whether or not your server can use the 64-bit kernel, and which kernel it uses by default, see this article.

Go here to see the original:
Mac OS X Server v10.6: Starting up with the 32-bit or 64-bit kernel

Similar Posts:

• Mac OS X Server v10.6: Compatibility with the 64-bit kernel
• Mac OS X Server v10.6: Macs that use the 64-bit kernel
• Mac OS X Server v10.6: Macs that use the 64-bit kernel
• Mac OS X Server v10.6: Macs that use the 64-bit kernel
• Mac OS X Server 10.5, 10.6: Enabling wiki access for Active Directory or third-party LDAP server users