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тАО01-06-2005 09:30 PM
тАО01-06-2005 09:30 PM
Problem with Disk system 2405
This is my first experience with Storages,So sorry if i asked silly question.
I have HP Disk System 2405 & a HP StorageWorks SAN Switch 2/8-EL
The problem is the performance.I copied a 4 GB file from local HDD to another local HDD in one of the servers and it took 6 mins to complete. BUT when i copied that file (4 GB) from local HDD to SAN it took about 50 mins to complete!.
What is the problem. I just crate a LUN in Disk system and connect it to the servers. All the things is defualt.Does it need some configuration to work well?
Please Advice
Regards,
Alireza
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тАО01-06-2005 09:45 PM
тАО01-06-2005 09:45 PM
Re: Problem with Disk system 2405
How did you configure the DS2405? Did you format the disks or use what was there already? Was it new, or from a disk array or something? What is the LVM configuration? How many drives are there in the DS2405? What size/speed? How is the switch configured?
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тАО01-06-2005 09:55 PM
тАО01-06-2005 09:55 PM
Re: Problem with Disk system 2405
Yes it is new,
As i remember i executed just 2 commands on it.
1.fmt
2.cfg -L 1 -a 12g -g 1
I did not change anything else.switch configuration is as defualt, i did not change it.
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тАО01-17-2005 01:59 AM
тАО01-17-2005 01:59 AM
Re: Problem with Disk system 2405
It seems that you are using a VA disk array and not the 2405 JBOD in standalone config.
A disk array behaves different that a standalone disk or jbod. Many many things can cause slow performance. Loading a lun with a lot of data can make the array slow for a while. After it had time to perform the housekeeping performance will get better.
Regards,
Arend
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тАО01-17-2005 07:06 PM
тАО01-17-2005 07:06 PM
Re: Problem with Disk system 2405
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тАО01-17-2005 08:22 PM
тАО01-17-2005 08:22 PM
Re: Problem with Disk system 2405
It is DS 2405 , VA 7110 and HDDs are 10k. What should be the speed of read & write on this system?
The ports on both server side and disk array, are configured at 2Gb/s.I copied a 4.5 GB from a local Hard disk on the server to the SAN, it took about 6 mins to complete. Is it ok? I think it should be faster.
Alireza
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тАО03-31-2005 12:04 AM
тАО03-31-2005 12:04 AM