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

EVA4000 storage — overview and planning 5–9
5.1.3.2.4 EVA4000 configuration example 4 — multiple file systems
Table 5-4 shows how to configure LUNs in a system comprised of six servers and five EVA4000 arrays. In
this configuration, you can create two file systems. The first file system is comprised of one MDS service and
six OST services. The second file system is comprised of one MDS service and two OST services.
Table 5-4 Multiple file 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] MDS LUN for the first file system. See
Section 5.5 for information on sizing the
MDS LUN.
2Size can
vary
mds south[1-2] The second of the pair of MDS LUNs for the
first file system.
1Size can
vary
mds south[1-2] MDS LUN for the second file system.
2Size can
vary
mds south[1-2] The second of the pair of MDS LUNs for the
second file system.
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.