Storage Management TEG: Questionnaire Level 1 - Shuting Liao

This twiki is to collect the input of Shuting Liao. Please answer the questions below. For more information, please refer to the Storage TEG main twiki.

Question 1

- In your view, what are the 3 main current issues in Storage Management (SM)?

My answer:

(Input from ASGC T1 and T2 operation)

- Single point of failures (Core services, Disk servers)

- File distribution not properly

- Rely on central database

Question 2

- What is the greatest future challenge which would greatly impact the SM sector?

My answer:

reliability, stability, performance, archiving and utilization

Question 3

- What is your site/experiment/middleware currently working on in SM?

My answer:

WLCG Tier-1 (Taiwan-LCG2) and Tier-2 (TW-FTT) centre by CASTOR and DPM respectively,

Question 4

- What are the big developments that you would like to see from your site/experiment/storage system in the next 5 years?

My answer:

- HA/Load balancing for core service and disk server.

- File re-balancing.

- Chuck or block based data store in disk server.

- Take off central database and switch to distributed metadata.

Question 5

- In your experience and area of competence, what are the (up to) 3 main successes in SM so far?

My answer:

Object-based architecture, no data access bottleneck on any head node, which makes Grid SM being PetaByte scale storage element in the world.

Question 6

- In your experience and area of competence, what are the (up to) 3 main failures or things you would like to see changed in SM so far?

My answer:

- Single point of failure on disk server.

- File distribution with good File system selection mechanism.

That's it!

Thanks! Feel free to edit again at any time, until the date of the kick-off meeting.

-- DanieleBonacorsi - November 2011