Feeds

IBM multi-petabyte cloud defies XIV storage

How does it scale that much?

  • alert
  • submit to reddit

Internet Security Threat Report 2014

Indirectly scaling out XIV

The XIV is a block storage device whereas GPFS is, obviously, a file system. Could we be looking at BladeCenter servers running GPFS and acting as network-attached storage (NAS) heads, each with its own XIV array? Scaling the system would mean adding more BladeCenter/GPFS servers plus an XIV array with all the inter-nodal functionality carried out at the server level. IBM says (pdf): "In addition to nodes that are directly attached to the storage, a single GPFS file system can be accessed by thousands of nodes using a LAN connection like Ethernet or InfiniBand."

That sounds promising. It has this to say about GPFS and block I/O: "GPFS has a very flexible cluster architecture providing many options to develop a solution including: direct attached, network block I/O, a combination of the two and multi-site operations... the network block I/O (also called network shared disk or NSD)... is a software layer that forwards block I/O requests from an NSD client application node to the LAN, which then passes the request to an NSD storage node to perform the disk I/O and pass data back to the client. GPFS makes the LAN-based I/O operation transparent to the application. Using a Network Block I/O configuration can be more cost-effective than a full-access SAN and can be used to tie together systems across a WAN."

XIV is an NSD storage node in this scenario.

Which XIV scaling route is IBM going to use: scaling up XIV nodes; scaling out XIV nodes; or indirect scaling out with nodes composed of BladeCenter/GPFS servers each with its own XIV array?

From here it looks as if existing XIV arrays linked to BladeCenter server/GPFS nodes will be tied together in a scale-out architecture with the GPFS/BladeCenter servers performing the interconnect functions. That seems far more likely, and easier to accomplish than scaling XIV up internally or developing XIV super clusters. ®

Beginner's guide to SSL certificates

More from The Register

next story
Docker's app containers are coming to Windows Server, says Microsoft
MS chases app deployment speeds already enjoyed by Linux devs
'Hmm, why CAN'T I run a water pipe through that rack of media servers?'
Leaving Las Vegas for Armenia kludging and Dubai dune bashing
'Urika': Cray unveils new 1,500-core big data crunching monster
6TB of DRAM, 38TB of SSD flash and 120TB of disk storage
Facebook slurps 'paste sites' for STOLEN passwords, sprinkles on hash and salt
Zuck's ad empire DOESN'T see details in plain text. Phew!
SDI wars: WTF is software defined infrastructure?
This time we play for ALL the marbles
Windows 10: Forget Cloudobile, put Security and Privacy First
But - dammit - It would be insane to say 'don't collect, because NSA'
Oracle hires former SAP exec for cloudy push
'We know Larry said cloud was gibberish, and insane, and idiotic, but...'
Symantec backs out of Backup Exec: Plans to can appliance in Jan
Will still provide support to existing customers
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.
Why cloud backup?
Combining the latest advancements in disk-based backup with secure, integrated, cloud technologies offer organizations fast and assured recovery of their critical enterprise data.
Win a year’s supply of chocolate
There is no techie angle to this competition so we're not going to pretend there is, but everyone loves chocolate so who cares.
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?
Intelligent flash storage arrays
Tegile Intelligent Storage Arrays with IntelliFlash helps IT boost storage utilization and effciency while delivering unmatched storage savings and performance.