Access "Backup in a snap: A guide to snapshot technologies"
This article is part of the Vol. 8 Num. 7 October 2009 issue of Snaphot technology tutorial
Snapshot technologies are commonly used to enhance data backup systems and dramatically shorten RTOs and RPOs. But you need to know how snapshot implementations can vary, and what those differences could mean to your environment. A snapshot is commonly defined as a copy of a set of files, directories and/or volumes as they were at a particular point in time. As its name suggests, a snapshot is very much like a photograph because it captures an image of a certain set of data at a specific moment or point in time. Snapshot technology was originally architected to solve several data backup problems, including: Backing up data that's too large to complete in the allocated time Failing to back up data because it has moved from a directory that hasn't been backed up to one that already has Corruption of backed up data that can occur when it's being written to while it's being backed up The affect on application performance while a backup is in process All of these backup problems can be resolved with snapshots. But snapshots shouldn't be considered a backup ... Access >>>
Premium Content for Free.
Storage redux: Purchase plans reviving
Our latest Storage Purchasing Intentions survey suggests that there may be a glimmer of hope for the economy based on storage managers purchase plans.
Growing need for email archiving
More and more shops are archiving their email, which is good thing considering ever-escalating message traffic and stringent compliance regulations.
- Storage redux: Purchase plans reviving
Backup in a snap: A guide to snapshot technologies
Snapshots are used to enhance backup systems and shorten RTOs and RPOs. But you need to know how snapshots can vary, and what those differences could mean to your environment.
What's inside internal storage clouds?
If you thought you knew cloud storage, think again. With scores of vendors touting internal storage clouds, we'll give you the lowdown on what makes a storage cloud "internal."
- Backup in a snap: A guide to snapshot technologies
NFS 4.1's pNFS: Big NAS performance boost
by Terri McClure
With the parallel file system pNFS now part of the NFS 4.1 protocol, NAS storage will shift into a higher gear.
Throwing caution to the clouds
There's a lot to like about cloud storage, and its benefits in terms of cost savings and convenience are attractive. But there are some residual effects you should consider.
- NFS 4.1's pNFS: Big NAS performance boost by Terri McClure
More Premium Content Accessible For Free
Just about as quickly as we learn the merits of a new solid-state form factor, a new one appears. While the use and location of spinning disk ...
As much as we might want to assume an "out of sight, out of mind" attitude about the data we ship to cloud storage services, the truth is that it ...
Object storage is sizzling hot, with technologists calling it the necessary building block for efficient cloud storage and big data projects. As ...