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07-21-2010 06:43 AM
07-21-2010 06:43 AM
XP24000 disk location
What is inner disk and outer disk in terms of XP24000 SAN storage. Oracle reccomends outer disk for data file. What this means in XP24K storage
1 REPLY 1
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07-21-2010 09:31 AM
07-21-2010 09:31 AM
Re: XP24000 disk location
The Oracle terminology is ambiguous. It might refer to disk platters where the data file is stored on the outer tracks. Or the terminology means something to a specific vendor's disk arrangement where faster disks are stored in a specific location in the cabinet.
With the XP24000 (or any model of XP, or virtually all major manufacturers of large disk arrays), there are no disks visible to your computers. All the electronics and your SAN administrator's setup have 'virtualized' disk space. A specific data file may be spread across 5 or 10 or more disks, and the response time is buffered with a large internal cache that makes the data available much faster than for a single disk.
In the XP, there might be smaller disks which will be faster because there will be more disks for the same amount of data) and bigger disks which are cheaper but slower because a lot more data is contained on a single disk. These are called disk groups and will be referred to as high performance or archive (slower performance). You SAN admin can tell you about the groups that have been setup.
Bill Hassell, sysadmin
With the XP24000 (or any model of XP, or virtually all major manufacturers of large disk arrays), there are no disks visible to your computers. All the electronics and your SAN administrator's setup have 'virtualized' disk space. A specific data file may be spread across 5 or 10 or more disks, and the response time is buffered with a large internal cache that makes the data available much faster than for a single disk.
In the XP, there might be smaller disks which will be faster because there will be more disks for the same amount of data) and bigger disks which are cheaper but slower because a lot more data is contained on a single disk. These are called disk groups and will be referred to as high performance or archive (slower performance). You SAN admin can tell you about the groups that have been setup.
Bill Hassell, sysadmin
The opinions expressed above are the personal opinions of the authors, not of Hewlett Packard Enterprise. By using this site, you accept the Terms of Use and Rules of Participation.
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