Feeds

Is DAS the storage comeback kid?

LSI scents resurgence

Top 5 reasons to deploy VMware with Tegile

Striking a note contrary to convergence and shared storage conventional wisdom, LSI is seeing signs of a resurgence in direct-attached storage.

The prevailing idea is that server proliferation and virtualisation in data centres is strengthening the need for consolidated and shared data storage, either network-attched storage (NAS) for files or block-oriented storage area networks (SANs).

LSI's Robin Wagner, senior director for storage in its components division, says that SAS and small form factor drives are beginning to change that. The evidence is anecdotal and based on LSI shipping more than 13 million SAS integrated circuit (ICs) to its customers for use mostly on servers. LSI has also shipped more than five million SAS RAID stacks, MegaRAID, etc, solely for use on servers. It's looking forward to shipping faster 6Gbit/s SAS ICs towards the end of this year.

Harry Mason, LSI's director of industry marketing, said it's not that LSI's server-oriented SAS IC shipments are growing faster than its Engenio SAS controller storage array business into the SAN and NAS markets. They are growing too and there's no evidence that server SAS is replacing networked array SAS.

The scenario that Wagner and Mason are painting is one where virtualised servers, along with blade servers, can now have a lot of direct-attach, fast-access, SAS storage, particularly with 2.5-inch small form factor drives. SAS zoning, which enables the splitting up of a pool of DAS storage and its mapping to applications helps. The SAS-controller storage can be split up and mapped to individual VMs so that there is consolidated storage for the virtual machines.

They say this is an entry-level virtualised and/or bladed server thing. For more substantial server environments, and to support the movement of VMs and their stored data between physical as well as virtual servers then networked storage will be needed. HP, with its LeftHand Networks software, can take grouped servers' DAS and turn it into a SAN which will suit many SMEs. It pushes the crossover point between DAS and networked storage higher. ®

Beginner's guide to SSL certificates

More from The Register

next story
Ellison: Sparc M7 is Oracle's most important silicon EVER
'Acceleration engines' key to performance, security, Larry says
Oracle SHELLSHOCKER - data titan lists unpatchables
Database kingpin lists 32 products that can't be patched (yet) as GNU fixes second vuln
Lenovo to finish $2.1bn IBM x86 server gobble in October
A lighter snack than expected – but what's a few $100m between friends, eh?
Ello? ello? ello?: Facebook challenger in DDoS KNOCKOUT
Gets back up again after half an hour though
Troll hunter Rackspace turns Rotatable's bizarro patent to stone
News of the Weird: Screen-rotating technology declared unpatentable
prev story

Whitepapers

Forging a new future with identity relationship management
Learn about ForgeRock's next generation IRM platform and how it is designed to empower CEOS's and enterprises to engage with consumers.
Storage capacity and performance optimization at Mizuno USA
Mizuno USA turn to Tegile storage technology to solve both their SAN and backup issues.
The next step in data security
With recent increased privacy concerns and computers becoming more powerful, the chance of hackers being able to crack smaller-sized RSA keys increases.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.
A strategic approach to identity relationship management
ForgeRock commissioned Forrester to evaluate companies’ IAM practices and requirements when it comes to customer-facing scenarios versus employee-facing ones.