HP StorageWorks Scalable File Share System Installation and Upgrade Guide Version 2.2

Configuring the storage5–8
5.1.3.2.3 EVA4000 configuration example 3 — larger system
Table 5-3 shows how to configure LUNs in a system comprised of six servers and five EVA4000 arrays. In
this configuration, you can create a file system comprised of one MDS service and eight OST services. In
this example configuration, the MDS service runs on a dedicated MDS server (south2).
Table 5-3 Larger system example
Array Disk Group Size Role Presented to Notes
1 140GB
1
1. Can be configured to a different size.
adm south[1-2] The administration LUN.
21GBservice south[1-2] The service LUN for south1 and south2.
1Size can
vary
mds south[1-2] An MDS LUN. See Section 5.5 for
information on sizing the MDS LUN.
2Size can
vary
mds south[1-2] The second of the pair of LUNs for the MDS
service.
2 11GBservice south[3-4] The service LUN for south3 and south4.
1 Uses
remaining
capacity
(90% rule)
ost south[3-4] The first OST LUN. The size is the space
remaining (out of 90% of actual capacity)
after the service LUN has been created, and
allowance has been made for redundancy
overheads.
2 Uses 90%
capacity
ost south[3-4] The second OST LUN. You must leave 10% of
actual capacity unused, and allow for
redundancy overheads.
3 1 Uses 90%
capacity
ost south[3-4] The third OST LUN. You must leave 10% of
actual capacity unused, and allow for
redundancy overheads.
2 Uses 90%
capacity
ost south[3-4] The fourth OST LUN. You must leave 10% of
actual capacity unused, and allow for
redundancy overheads.
4 11GBservice south[5-6] The service LUN for south5 and south6.
1 Uses
remaining
capacity
(90% rule)
ost south[5-6] The fifth OST LUN. The size is the space
remaining (out of 90% of actual capacity)
after the service LUN has been created, and
allowance has been made for redundancy
overheads.
2 Uses 90%
capacity
ost south[5-6] The sixth OST LUN. You must leave 10% of
actual capacity unused, and allow for
redundancy overheads.
5 1 Uses 90%
capacity
ost south[5-6] The seventh OST LUN. You must leave 10%
of actual capacity unused, and allow for
redundancy overheads.
2 Uses 90%
capacity
ost south[5-6] The eighth OST LUN. You must leave 10% of
actual capacity unused, and allow for
redundancy overheads.