Sybase DC35823-01-1500-04 manual Choosing a raw partition

Adaptive Server devices and system databases

When preparing a raw partition device, follow these guidelines:

•Do not initialize a database device on the partition that contains your Sybase installation software. Doing so destroys all existing files on that partition.

•A raw partition designated for use by Sybase cannot be mounted for use by the operating system for any other purpose, such as for file systems or swap space.

•After a Sybase configuration utility or the disk init command has initialized a portion of a partition as a database device, the entire partition cannot be used for any other purpose. Any space left on the partition beyond the size specified for the device becomes inaccessible, unless you drop and re- create the device.

•For best performance, place the Sybase software and all disk devices, including the master device, on the same machine.

•To avoid any possibility of using a partition that contains the partition map, do not use cylinder 0.

vChoosing a raw partition

1 Determine which raw partitions are available.

2 Determine the sizes of the raw partitions.

3 From the list of available raw partitions, select a raw partition for each device, based on the size recommendations in Table 1-1 on page 9.

4 Verify with the operating System Administrator that the partition you have chosen is available.

5 Make sure the “sybase” user has read and write privileges to the raw partition.

Note For more information on choosing a raw partition, see your operating system documentation.

10 Adaptive Server Enterprise