Feeds

Scality opens Ring for close scrutiny

First object storage to be openly performance tested

Application security programs and practises

It seems to be a world first: public and independent assessment of object storage performance compared to hard disk drive (HDD) block-based SAN arrays. The object storage supplier is Scality and the assessor is tech analyst ESG, which finds that Scality's Ring has performance comparable to, if not better than, high-performance file and SAN storage arrays.

Object storage is based on the idea of storing non-block-based data as objects whose address and integrity in the storage space is based on mathematical hash table processing of the binary contents. There is no need for a file/folder system which object storage suppliers say can be slow and inefficient when storing billions of files. However, as ESG notes: "The disadvantage of object storage in the past has been performance, as data retrieval is generally considered slower than with a file system."

ESG Scality Report

Scality's Ring is a scalable object storage system composed of X86-based nodes storing data in a self-healing way, and logically organised in a ring. An app in a server requests an object read access (get) or writes an object (put). In the get case, if the object is not on on the request-receiving node, only one hop across a 10-node ring will be needed to find it. This rises to two hops for an up-to-100-node ring, and three hops for Rings up to 1,000 nodes in size.

ESG says Scality's Ring "delivers high I/O using parallel loads (for lots of small files) and high throughput for large files, but with features traditionally associated with high-end SANs - data persistence with replication and checksum, geo-redundancy, snapshots, automatic tiering, etc."

Its report looked at manageability of the Ring and its ability to recover from a lost hardware component, such as a node, as well looking at actual performance. We only examine the performance testing here.

Scality Ring performance

First, ESG looked at object access, both gets and puts. A 3-server ring with 36 logical nodes delivered 26,274 put objects/sec and 41,573 get objects/sec.

Regarding puts, ESG states: "26,274 objects per second from a three node system is an excellent result for an object-based storage solution and a very good result compared to the I/O per second performance of industry leading block-based dual controller disk arrays."

That sounds as if it is saying that the Ring is faster than a traditional SAN array but it doesn't actually say it. Also ESG only tested up to six server nodes and so we don't know how a 100-node or 500-node Ring would perform.

ESG Scality Response Time Chart

ESG's chart of Scality Ring response times

ESG looked at response time and its results are charted above, showing that a 3-node Ring needed less than 5ms for an object get, put or delete: "ESG Lab confirmed response times of no more than 7.05ms for gets, puts, and deletes — 10X the performance of traditional architectures — as well as increasing aggregate performance as nodes are added to the RING."

It said: "The excellent response times of a Scality Ring are comparable with a traditional block-based disk array and considerably faster than [other] object-based storage systems that ESG lab has tested."

Bridging the IT gap between rising business demands and ageing tools

Next page: Ring scaling

More from The Register

next story
Apple fanbois SCREAM as update BRICKS their Macbook Airs
Ragegasm spills over as firmware upgrade kills machines
Auntie remains MYSTIFIED by that weekend BBC iPlayer and website outage
Still doing 'forensics' on the caching layer – Beeb digi wonk
Attack of the clones: Oracle's latest Red Hat Linux lookalike arrives
Oracle's Linux boss says Larry's Linux isn't just for Oracle apps anymore
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
prev story

Whitepapers

Top three mobile application threats
Prevent sensitive data leakage over insecure channels or stolen mobile devices.
Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Top 8 considerations to enable and simplify mobility
In this whitepaper learn how to successfully add mobile capabilities simply and cost effectively.
Application security programs and practises
Follow a few strategies and your organization can gain the full benefits of open source and the cloud without compromising the security of your applications.
The Essential Guide to IT Transformation
ServiceNow discusses three IT transformations that can help CIO's automate IT services to transform IT and the enterprise.