Determine what storage devices you need
Before backing up, determine what and how many storage devices you need.
- What type of storage devices do you need?
The transaction volume and the size of your database are major factors in determining the type of storage devices that you need.
HCL® OneDB® Storage Manager (ISM) supports simple tape devices such as QIC, 4 mm, 8 mm, DLT, optical devices, and disk backups. If ISM cannot manage the storage devices that you need, you need to purchase a different storage manager. For more information, see the HCL OneDB Storage Manager Administrator's Guide.
- What is the availability requirement for each device?
Is it important for your storage devices to allow random and sequential access? If so, you cannot use tape storage devices.
- How many storage devices do you need?
ISM supports up to four devices per host.
The number of storage devices that you need depends on the storage devices you have, how much transaction activity occurs on the database server, how fast throughput is, how much time you can allow for backups, and other similar factors.