ExpressCluster X 2.0 for Windows Reference Guide - Nec

Chapter 6 Group resource details
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Data partition
Partitions where data that is mirrored by ExpressCluster (such as application data) is stored are
referred to as data partitions. Allocate data partitions as follows:
� Data partition size
There is no limitation for partition size. Allocate any size of partition. However, if the size is
too large when copying completely at the time of initial construction and/or changing disks,
the maintainability is deteriorated. This is because the larger the size is, the more it takes
time to copy completely. Thus, it is recommended to set the size of the data partition 100GB
or less in total.
� File system
Format the partition with NTFS. FAT/FAT32 is not supported.
� Allocate the partition on a basic disk. The dynamic disk is not supported.
� When making data partitions as logistical partitions on the extended partition, make sure the
data partitions are logical partition on both servers. The actual size may be different even the
same size is specified on both basic partition and logical partition
� The access to the data partition is controlled by ExpressCluster.
Cluster partition
Dedicated partitions used in ExpressCluster for mirror partition controlling are referred to as
cluster partition.
Allocate cluster partitions as follows:
� Cluster partition size
17 MB or more. Depending on the geometry, the size may be larger than 17 MB, but that is
not a problem.
� A cluster partition and data partition for data mirroring should be allocated in a pair.
� You do not need to make the file system on cluster partitions. Do not format.
� The access to a cluster partition is limited.
ExpressCluster X 2.0 for Windows Reference Guide