Amjad,
DSpace essentially stores its files on your local filesystem. So, it
can store on anything that "acts" like a local filesystem. This means
that you can store data on a SAN or an external drive assuming that it
is mounted on your local filesystem and appears as a normal drive/folder.
The Assetstore numbers allow you to change the location of *new* files
if your local drive fills up (and has no more space). DSpace does not
change this location dynamically -- you have to do this manually as
necessary. So, by default, DSpace will initially store all files in
store #0. If you location specified by store #0 fills up (and you
cannot expand its space), you can create a new store #1 for all new
contents. At that point, you'd have the following:
Store #0 - would continue to store all old contents which were initially
created there
Store #1 - would store all newly created contents
Each time you add a new assetstore, it is used to store all new
contents. The old assetstore locations need to be kept around (as
DSpace will still look for old files at those locations).
An alternative to adding new assetstores is that you can move where the
content is stored. So, if initially you have all your contents in
assetstore #0 (at [dspace-dir]/assetstore), and you start to run out of
space, you could just *move* all those contents to another mounted drive
(e.g. [my-new-assetstore-location]), and change the path of
'assetstore.dir' to that new location.
I hope that helps,
- Tim
On 7/15/2010 2:55 AM, AMJAD USMAN wrote:
> respected sir,
> i mean to say that Dspace dynamically supports data storage or not?
> As far i have understood the DSpace documentation regarding
> "assetstore", it was saying that you have to mention the place and
> number of stores.
>
> ##### File Storage ######
>
> # Asset (bitstream) store number 0 (zero)
> assetstore.dir = ${dspace.dir}/assetstore
>
> # Specify extra asset stores like this, counting from 1 upwards:
> # assetstore.dir.1 = /second/assetstore
> # assetstore.dir.2 = /third/assetstore
>
> # Specify the number of the store to use for new bitstreams with this
> property
> # The default is 0 (zero) which corresponds to the 'assetstore.dir' above
> # assetstore.incoming = 1
> ##### End of File Storage ######
>
> My question is:
> let i have mentioned to store bitstreams in asetstore number zero.
> suppose after some time, the store fills (means the space allocated to
> that store is consumed). then how can i assign it new assetstore ?
> secondly, can i assign a different harddisk located in different machine ?
> will i have to reconfigure the dspace config file and whether it will
> effect the existing data ?
>
> From:
> Amjad
> NUST, Pakistan
>
>
>
>
> ------------------------------------------------------------------------
> Date: Wed, 14 Jul 2010 21:29:58 +0800
> From: [email protected]
> To: [email protected]; [email protected]
> Subject: Re: [Dspace-tech] [Dspace-general] Storage of documents
>
> Hi Amjad,
>
> Dspace is working in the application layer, while RAID is much close to
> layers about hardware and OS.
> There is no much relationship between them.
>
> In short, if your OS supports RAID, dspace can benefit from this feature.
>
> Cheers,
> Allen Lam.
> HKU Hub Administrator, http://hub.hku.hk
>
>
>
> On 2010-07-14 8:33 PM, AMJAD USMAN wrote:
>
> hello every body,
> can anybody tell me whether DSpace supports RAID technology for
> storing data?
>
> From:
> Amjad Usman Marwat
> MSIT 9 , SEECS, NUST, H-12 Campus Islamabad.
>
>
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