Access "Ask the Experts: RTOs and RPOs"
This article is part of the Vol. 7 No. 7 September 2008 issue of Using two midrange backup apps at once
Q: Is there a standard ratio between RTOs and RPOs, or are they independent of each other? A. There's no "standard" ratio or relationship between a recovery time objective (RTO) and a recovery point objective (RPO). But one can affect the other. The RTO is the amount of time in which a system must be recovered in the event of an interruption, and the RPO is the point in time to which a system's data must be recovered. Depending on the type of application and the business function it supports, the RTO and RPO can be miles apart. An application providing a critical service relying on static data may have an RTO of one hour, but an RPO of one day. The app must be up in one hour, but using yesterday's data is OK. It's possible to miss an RTO while trying to meet an RPO if it takes so long to restore the data to meet the RPO that the app ends up being down longer than allowed. --Pierre Dorion, data center practice director and senior consultant, Long View Systems Inc. Access >>>
Premium Content for Free.
Are full backups a thing of the past?
by Kevin Suttle
In the not-so-distant past, we relied on tape backups for operational recovery, disaster recovery and long-term data retention. But are full nightly backups to tape still needed now that we have new disk-based technologies like snapshots and continuous data protection?
- Our View: Whom do you trust?
- SMBs move beyond the VTL interface
Ask the Experts: RTOs and RPOs
Is there a standard ratio between RTOs and RPOs, or are they independent of each other?
- The lure of open-source backup programs
Dedupe myths and methods
Exaggerated claims, rapidly changing technology and persistent myths make navigating the deduplication landscape treacherous. We list the top five dedupe myths and provide tips to help you get a deduplication product that fits your organization's needs at a competitive price.
Small disks, big specs
Hard disk drives have been around for more than 50 years, but the technology is on the cusp of big changes--SAS, a shift to the 2.5-inch form factor and a steady increase in disk drive capacity--that will affect enterprise storage for years to come.
- Ballooning storage by the numbers
Ask the Expert: NFS vs. CIFS
What should you consider when choosing between Network File Sharing (NFS) or Common Internet File System (CIFS)?
Centralize virtualization at the switch
There are a number of ways you can virtualize your storage, but because a switch-based virtualization engine works out-of-band, there's no need for server agents, making it the most scalable and highest performing of all virtualization architectures.
- Backup apps' reporting tools become more versatile
- Backup software by the numbers
Virtual server backup tips
Virtualized servers yield many benefits, but they can also add complexity to backup operations. There are three main ways to back up a virtual server. Here's how to determine which method is best for your virtualized server environment and storage requirements.
- New life for NAS
- Our View: When good admins go bad
- Are full backups a thing of the past? by Kevin Suttle
- Storage administrators find some relief for backup headaches
- Dedupe moves beyond backup
- Midrange online backup offerings help SMBs get on the cloud
CDP in depth
Continuous data protection (CDP) technology is now a viable alternative to traditional backup software and storage system-based replication software. But CDP products can vary significantly, especially in the context of different storage architectures. Depending on specific environments, companies may have to evaluate very different criteria before settling on a CDP product.
Disk-to-disk backup enticing in many forms: Survey Says
Disk-to-disk backup enticing in many forms
- No rush to deploy iSCSI
- DAS revs up for a resurgence
- LTO top tape format by far: Survey says
- DC power can cut costs, but conversion isn't easy
- Price of SAS drives dips
- Archiving, DR join backup as online services
- Why are you using a VTL or why have you decided not to use one?
- What storage product would you like to see on the market that isn't now?
Quality Awards IV: On top again: CommVault Galaxy, EMC Retrospect
CommVault's Galaxy solidified its position as the top enterprise backup product by finishing first for the third time in the four years we've conducted the Quality Awards. Among the midrange products, EMC Retrospect retained its crown as group champion.
Gen2 virtual tape libraries: Hot Spots
by Lauren Whitehouse
From disaster recovery to capacity optimization and dedupe, the next phase of VTL products promises change.
Backup by the numbers: Backup Purchasing
Results from Storage magazine's most recent Purchasing Intentions survey reveal that respondents will have to expand or alter their backup systems to protect ever-growing data stores.
- Connecting the backup dots: Editorial
Break those backup bottlenecks: Best Practices
by Jeff Harbert
Backup performance tuning is an art, but identifying infrastructure bottlenecks is more of a strict mathematical exercise once you know the important numbers. And understanding the source of existing and potential bottlenecks makes it easier to find and resolve them.
- Coping with cloud storage: Editorial
Migration projects need automation boost: Hot Spots
by Bob Laliberte
If you have a data migration project in the works, challenge your storage vendor, storage software vendor or third-party consulting firm to deliver a solution that reduces the time, risk and cost of your project.
Don't get stuck with old backup ideas: Best Practices
The time has come to shed your traditional, compartmentalized view of backup and embrace a recovery-centric data management focus.
Keep it simple, stupid: Part deux: Storage Bin 2.0
Are you one of those companies that leaves inactive data on the most expensive architecture and applies stringent (expensive) processes to that same data? If so, wise up!
- Gen2 virtual tape libraries: Hot Spots by Lauren Whitehouse
More Premium Content Accessible For Free
Big data infrastructure and analytics are some of the hottest technology topics today, and it can sometimes seem impossible to dissect and digest all...
Mobile workers are now accessing, creating and modifying data on ultra-portable devices such as smartphones, tablets and phablets. Most companies ...
Solid-state storage is proliferating as a replacement for hard disk drives, where it offers a quick shift into the fast lane of storage processing. ...