Feeds

EMC doubles up mainframe VTL capacity, throughput

Still lags behind IBM though

HP ProLiant Gen8: Integrated lifecycle automation

EMC has doubled the capacity and throughput of its mainframe virtual tape library (VTL) but it still lags behind IBM. It does exceed Sun's VTL capacity, though.

The EMC DLm (Disk Library for mainframes) now supports up to 1.2PB of raw and usable capacity. EMC says that's almost 3PB compressed capacity, and 1.2GB/sec throughput, by using up to six so-called virtualisation engines. A fully configured DLm needs 13 cabinets.

Sun's VTL PLus 2.0 offers up to 896TB of raw capacity and a 2.4GB/sec throughput on five 19-inch racks. IBM's TS7530 Virtualisation Engine offers 1.7PB raw usable capacity; 3.4PB with 2:1 compression, and up to 4.7GB/sec read bandwidth and 4.4GB/sec write bandwidth.

EMC has improved the DLm's software by adding enhanced administrator support with Secure Remote Services. EMC's Customer Service can directly connect to a customer’s DLm system through a secure IP connection for faster support. Customers can also send off log files, alerts and activities to the EMC support centre for quicker problem resolution. That seems pretty basic, and also pretty necessary. What happened before? Did an EMC support person have to visit the customer's data centre to get this stuff?

EMC says the latest version of DLm software tracks the status of every tape volume in the system and makes that information available within each system. These logs can be replicated to off-site DLm systems, enabling customers to know which tape volumes are usable for their disaster recovery procedures. EMC claims that: "This feature is unique to the industry, providing a key competitive advantage over other mainframe virtual tape libraries."

There's better reporting too. The new DLm is available immediately but no pricing information was released.

There's no deduplication on these boxes, by the way. Where they are used in a disk-to-disk-to-tape environment that's not surprising. EMC is positioning the DLm as a tape replacement device though, and it also has a dedupe-everywhere strategy. That dedupe tide hasn't washed up onto its mainframe VTL shore yet.

Mainframe VTL competitor Shoden has a deduplicating mainframe VTL. It uses a Data Domain dedupe engine writing to HDS drive arrays.

Maybe EMC's DLm needs a Data Domain push? ®

Eight steps to building an HP BladeSystem

More from The Register

next story
THUD! WD plonks down SIX TERABYTE 'consumer NAS' fatboy
Now that's a LOT of porn or pirated movies. Or, you know, other consumer stuff
EU's top data cops to meet Google, Microsoft et al over 'right to be forgotten'
Plan to hammer out 'coherent' guidelines. Good luck chaps!
US judge: YES, cops or feds so can slurp an ENTIRE Gmail account
Crooks don't have folders labelled 'drug records', opines NY beak
Manic malware Mayhem spreads through Linux, FreeBSD web servers
And how Google could cripple infection rate in a second
FLAPE – the next BIG THING in storage
Find cold data with flash, transmit it from tape
Seagate chances ARM with NAS boxes for the SOHO crowd
There's an Atom-powered offering, too
prev story

Whitepapers

Seven Steps to Software Security
Seven practical steps you can begin to take today to secure your applications and prevent the damages a successful cyber-attack can cause.
Consolidation: The Foundation for IT Business Transformation
In this whitepaper learn how effective consolidation of IT and business resources can enable multiple, meaningful business benefits.
Designing a Defense for Mobile Applications
Learn about the various considerations for defending mobile applications - from the application architecture itself to the myriad testing technologies.
Build a business case: developing custom apps
Learn how to maximize the value of custom applications by accelerating and simplifying their development.
Consolidation: the foundation for IT and business transformation
In this whitepaper learn how effective consolidation of IT and business resources can enable multiple, meaningful business benefits.