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Home > Products > NAS Series > Introduction for NAStorage > Data Archiving
NAS Series
Introduction for NAStorage
As information increase at exponential rates, reliable and scalable storage systems are essential for storing and distributing valuable knowledge. With the sophisticated designs of the NAS products which assure data reliability and system scalability, Ingrasys provides you the robust infrastructure required for business operation.
Data Archiving
Moving Inactive Data Out of the On-line NAS Servers
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1.Abstract
Two things in common for most NAS servers – storage usage always outgrows the plans and they are often filled with inactive data. It is recommended and necessary to archive less-used data to offload the NAS servers and to deliver improved response time, stability and availability. The NAStorage™ servers are integrated with the data archiving function, helping storage administrators to archive data on a regular basis according to different data retention policies.
2.The Benefits
Without proper data management, NAS servers are often filled with unneeded data
which are rarely accessed. The situation will not be improved by adding
additional storage. This short-term fix merely defers the problem as users will
keep throwing in files, useful or not, when they realize there are more storage
space available. With the NAS servers full of inactive data, server performance
is impacted and response time lags. Most companies upgrade their storage
infrastructure to tackle the problem. It means more investment and it is not
hitting at the root cause of the problem.
It is necessary to “clean up” storage occasionally. By moving out inactive data out of the NAS servers, there can be an efficient use of storage capacity and NAS computing power.
But how? It will be an extremely tedious job by manually selecting the files to be moved out. There must be rules for the storage system to do it automatically. So the first job of archiving data is to set up the policies according to the needs and requirement, like keeping files updated in the past 3 months in the on-line NAS servers, moving out files which are older than a specified date, etc.
Once the policies are set, the NAStorage data archiving feature can help moving out historical data regularly. It allows storage administrators to filter out files by their ages, last modified time or archive bits, and then move them to a less expensive optical media.
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3.How to Archive Data in the NAStorage Servers?
With the NAStorage™ Disc Server function activated, you will see the “Data Archiving” sub-menu under the “Disc Server” menu. Click the “Tasks” tab to set up a new archiving task.
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4.Supporting Double-layer DVD+R Writing
The NAStorage™ servers support double-layer DVD+R writing, which write up to 8.5GB of data on one single disc. It makes the data archiving feature more powerful than single-layer DVD's 4.7GB. If two DVD writers are installed, the NAStorage™ server can archive up to 17GB of data without changing discs.
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5.Combining the power of NAStorage Disc Servers and the data archiving function
The data archiving feature of the NAStorage™ servers becomes more versatile by integrating with the NAStorage™ Disc Server function. During data archiving, the NAStorage™ servers will firstly turn the archive data into disc images, then burn them out, while the NAStorage™ Disc Servers manage and share CD/DVD discs in the form of disc images. You can choose to turn some less-frequently-used files to read-only disc images first, which can be mounted and shared to network users by using the Disc Server function. When the archived disc images are not in use for a long time, you can then choose to burn them to discs, further freeing up hard disk space.
6.Comparison of the data archiving functions between NAStorage and FISC CDH
| |
NAStorage |
FISC CDH |
| Max no. of archiving tasks |
8 |
10 |
| Keep archived CD/DVD images |
Yes |
Yes |
| Read/Share archived CD/DVD images |
Yes |
Yes |
| File filtering - date range |
Yes |
Yes |
| File filtering – ages of data |
Yes |
No |
| File filtering - archive bit |
Yes |
Yes |
| Scheduling |
Yes |
Yes |
| Conditional task activation |
By free space or by archive data size |
By free space |
| Temporary disc image |
Split disc images |
One big disc image |
| Supporting multiple CD/DVD writers |
Yes |
Yes |
| Summary logs |
Yes |
No |
| Records of which discs are burned |
Yes |
No |
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