Feeds

Scality opens Ring for close scrutiny

First object storage to be openly performance tested

SANS - Survey on application security programs

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."

3 Big data security analytics techniques

Next page: Ring scaling

More from The Register

next story
This time it's 'Personal': new Office 365 sub covers just two devices
Redmond also brings Office into Google's back yard
Kingston DataTraveler MicroDuo: Turn your phone into a 72GB beast
USB-usiness in the front, micro-USB party in the back
IBM rides nightmarish hardware landscape on OpenPOWER Consortium raft
Google mulls 'third-generation of warehouse-scale computing' on Big Blue's open chips
It's GOOD to get RAIN on your upgrade parade: Crucial M550 1TB SSD
Performance tweaks and power savings – what's not to like?
AMD's 'Seattle' 64-bit ARM server chips now sampling, set to launch in late 2014
But they won't appear in SeaMicro Fabric Compute Systems anytime soon
prev story

Whitepapers

Securing web applications made simple and scalable
In this whitepaper learn how automated security testing can provide a simple and scalable way to protect your web applications.
3 Big data security analytics techniques
Applying these Big Data security analytics techniques can help you make your business safer by detecting attacks early, before significant damage is done.
The benefits of software based PBX
Why you should break free from your proprietary PBX and how to leverage your existing server hardware.
Mainstay ROI - Does application security pay?
In this whitepaper learn how you and your enterprise might benefit from better software security.
Combat fraud and increase customer satisfaction
Based on their experience using HP ArcSight Enterprise Security Manager for IT security operations, Finansbank moved to HP ArcSight ESM for fraud management.