Veritas has long since been purchased by Symantec, but its products continue to be sold under the Veritas name. Over time, we can expect that some of the products will have name changes to reflect the new ownership.
Veritas produces volume and file system software that allows for extremely flexible and straightforward management of a system's disk storage resources.
Besides cost, the key business continuity drivers for a recovery solution are the Recovery Point Objective and the Recovery Time Objective.
The Recovery Point Objective (RPO) refers to the recovery point in time. Another way to think of this is that the RPO specifies the maximum allowable time delay between a data commit on the production side and the replication of this data to the recovery site.
It is probably easiest to think of RPO in terms of the amount of allowable data loss.
PROM Environment variables can be set at either the root user prompt or the
Most (but not all) PROM environment variables can be set with the
/usr/sbin/eeprom command. When invoked by itself, it prints out the current environment variables. To use
eeprom to set a variable, use the syntax:
Many people have asked whether Oracle Solaris 11 uses sparse-root zones or whole-root zones. I think the best answer is "both and neither, and more" - but that's a wee bit confusing. This blog entry attempts to explain that answer.
First a recap: Solaris 10 introduced the Solaris Zones feature set, way back in 2005.
The Solaris virtual memory system combines physical memory with available swap space via swapfs. If insufficient total virtual memory space is provided, new processes will be unable to open.
Swap space can be added, deleted or examined with the
swap -l reports total and free space for each of the swap partitions or files that are available to the system. Note that this number does not reflect total available virtual memory space, since physical memory is not reflected in the output.