This feature is available on different RDBMS flavors like Sybase, MSSQL and Oracle.
All can support automatic db extension
Basically on all platforms you have the same issue with this feature:
- less control about disk allocation (increasing fragmentation, etc)
- extra free space monitoring on OS level required
Note that on Sybase the device allocation also influences other processes, e.g. dbcc checkstorage can use multiple worker processes, but is limited by the amount of devices used for a database.
For Sybase there might be another issue with reloading you backups on other servers. E.g. for user acceptance testing. The same disk layout is required for the restore.
Most companies I've seen prefer to manage the space allocation manually.
Not much answers to your questions, but I hope it helps Image may be NSFW.
Clik here to view.
