Chapter 12. Scalability, reliability, and availability architectures 295
Figure 12-7   Horizontal and vertical scalability
A Content Manager OnDemand server can scale from a Windows server up to a cluster of 
z/OS systems. It is important to initially select an installation that meets the following 
requirements:
/SM590000Appropriate for your current workload in terms of the following items:
–P e r f o r m a n c e
– Reliability
– Availability
– Scalability
/SM590000Support for your future growth requirements if the following actions are necessary:
– Increase the number of users that access the system
– Increase the quantity of data that is stored in the system
/SM590000Change in the types of archived data 
/SM590000Change in the preprocessing requirements
Vertical
big ger bo x
Horizonta l
multip le systems
Arc hitec tur al
multip le serve r p latforms
Multip le lo cation s
2  t ie r a n d 3 ti er
Multip le cli ent typ es
Data  Stora ge
Numb er of ca bin ets,
Folder, AGs, Applications
Architectural flexibility
& scalability
Te sti ng compl exity
Object  Se rve r(s )
(1 or more )
Ar ch iv e  St or a g e 
TS M – OA M - V SAM
Libra ry
Serv er (1)
Sa me or di ff ere n t ma ch in e /p la tf orm
od b c
Cl ie nt
HFS
zFS ( z/OS)
HFS
zFS (z/OS)
TCP/I P
Net work
Cac he 
Stor age
Temp
Stor age
Ca ch e  
Storag e
Te m p
Storag e
TCP/I P or
No TCP/IP
Lo ad pro cess
DB2