storagesummit

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aligning the business needs of certain data to it's economic relevance

Promary benefit is optimizing the performance and cost of storage with the changing value of data over time. One of Oracle's customers has done just that

Navis Takes Multi-Tiered Storage Approach with Oracle (Video)

http://bit.ly/1lGdvM...

Depends on applications and use cases in effect. Could be perf. disk and capacity optimized disk in a single subsytem or could be independent hardware tiers, i.e. flash, spinning disk, tape

Managed by an HSM or archive manager software

The latter, that is

I think it's about aligning data to the best storage so that you optimize performance, capacity and cost simultaneously

he who still needs to explain tiered-storage should not be in a storage discussion :)

Can you please define HSM?

Tiering started with different speeds of disks - has flash made a dramatic change in how the technology is used?

Also, we should discuss issues such as long term data retention for compliance, archiving or BI/BA purposes. as well as how to manage tiered storage.

Not in a long term retention, i.e. archiving environment. Flash has less value here.

i think of tiered storage as aligning different capabilities to different sets of data to optimize cost.

@KerstinWoods -> tough to optimize all three legs of that stool.

But a great HSM with robust policies might do the trick

The key here is that not all data is equal yet so often we end up treating it all the same - putting it all on the same storage systems - such a waste!

@JeffFrick But that's the beauty of tiered storage :)

-> Does the media demand bifurcate? Flash (speed) and Tape (cost). Not much left for spinning disc in the middle

there are 2 types of storage tiering: the first one is multiple capabilities in a single platform/system. This could be that 1 file/volume resides on one of the tiers 1/2

How about matching the economic value of data to storage device? High-value, high access demand to fast spinning disk or flash, lower value to SATA; dormant to tape?

@KerstinWoods -> like designing an airplane, constant tradeoffs until you get an optimal solution for the objective at hand.

the second type is where a single file/volume is automatically distributed over different storage types

HSM = Heirarchical Storage Management. Been around for a long time. Also, sometimes referred to as ILM. But there are probably some distinctions between HSM and ILM that not everyone is aware of or agrees to

i see flash generally used to avoid tiering.

but tiering as such has nothing to to with archiving. maybe about retention but not archiving.

Let's say about the storage infrastructure behind archiving

Flash instead of tiering - Wow - that's an awfully expensive solution for a lot of inactive data.

no, archiving as such is the act of removing data from a production location

Archiving includes search, content awareness, compliance and deletion/scrape policies

tiered storage does not necessarily define or help with any of the above

Yes, removing from production environment, but still may be the primary copy of the data

if you are removing data from production and it's the only copy, you got to fire your data architects :)

In other words, its not necessarily data protection, though archiving may include BC/DR capabilities to support the archive

A good archive manager will manage multiple copies of the file across multiple tiers of storage.

Automatically based on established policies, of course.

This actually can reduce dramatically both production storage requirements and data protection (secondary storage) requirements. A lot of people don't recognize these added benefits of archiving less active data from production

"Performance Disk" is becoming an oxymoron - if it spins it's slow