Feeds

Is DAS the storage comeback kid?

LSI scents resurgence

Intelligent flash storage arrays

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. ®

Internet Security Threat Report 2014

More from The Register

next story
BOFH: WHERE did this 'fax-enabled' printer UPGRADE come from?
Don't worry about that cable, it's part of the config
Azure TITSUP caused by INFINITE LOOP
Fat fingered geo-block kept Aussies in the dark
You think the CLOUD's insecure? It's BETTER than UK.GOV's DATA CENTRES
We don't even know where some of them ARE – Maude
Want to STUFF Facebook with blatant ADVERTISING? Fine! But you must PAY
Pony up or push off, Zuck tells social marketeers
Yahoo! blames! MONSTER! email! OUTAGE! on! CUT! CABLE! bungle!
Weekend woe for BT as telco struggles to restore service
Oi, Europe! Tell US feds to GTFO of our servers, say Microsoft and pals
By writing a really angry letter about how it's harming our cloud business, ta
prev story

Whitepapers

Choosing cloud Backup services
Demystify how you can address your data protection needs in your small- to medium-sized business and select the best online backup service to meet your needs.
Getting started with customer-focused identity management
Learn why identity is a fundamental requirement to digital growth, and how without it there is no way to identify and engage customers in a meaningful way.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?
Reducing the cost and complexity of web vulnerability management
How using vulnerability assessments to identify exploitable weaknesses and take corrective action can reduce the risk of hackers finding your site and attacking it.
Saudi Petroleum chooses Tegile storage solution
A storage solution that addresses company growth and performance for business-critical applications of caseware archive and search along with other key operational systems.