INF: Disk Dump Device Size in SYSDEVICES

ID Number: Q40808

1.00 1.10 1.11 4.20

OS/2

Summary:

This article explains why the high column in SYSDEVICES is equal to

19 for a disk dump device that is supposed to be 1.2 MB.

More Information:

The size of disk dump devices is maintained in SYSDEVICES in units of

62K for internal reasons (19 * 62K = 1.2 megabytes). When creating a

disk dump device with "sp_addumpdevice:" specify the size in

megabytes. "sp_helpdevice" shows both the internal values stored in

SYSDEVICES and a plain-language interpretation of them.

The "high" and "low" columns in SYSDEVICES are maintained in units of

2K for database devices.