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тАО10-31-2006 10:59 PM
тАО10-31-2006 10:59 PM
Steps of installing and configuring EVA4000
Can anyone help me for installing EVA4000 (2C1D)with 20x300gb disks in a SAN environment. What is the most efficient and optimised way of configuring it. Although it depends on the requirement but I need the most optimised configuration. Please help.
Rana
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тАО10-31-2006 11:35 PM
тАО10-31-2006 11:35 PM
Re: Steps of installing and configuring EVA4000
I would suggest 1 disk group with all 14 disks in it.
As far as I am aware this may be the only option as I believe you require a minimum of 8 disks to create a disk group.
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тАО10-31-2006 11:52 PM
тАО10-31-2006 11:52 PM
Re: Steps of installing and configuring EVA4000
Please reply.
Rgds,
Rana
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тАО10-31-2006 11:57 PM
тАО10-31-2006 11:57 PM
Re: Steps of installing and configuring EVA4000
VRAID 5 would offer reasonable redundancy and would utilise Vdisk Size plus about 20%)
VRAID 0 offers No Redundancy and utlises the size of the vdisk only.
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тАО11-01-2006 12:40 AM
тАО11-01-2006 12:40 AM
Re: Steps of installing and configuring EVA4000
I take it that even though the EVA mentioned is 2C1D that you will be getting a 2nd disk enclosure?
The enclosures are only the price of 2 disks and would mean that your application would be spread over 20 disk spindles instead of 14.
Having more disks means more performance and more usable capacity.
Make 1 disk group, make your vdisks vraid5, load balance your application vdisks across your fibre channel controllers where possible, increase your scsi queue depth if possible.
Good luck.
Ian
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тАО11-01-2006 06:36 PM
тАО11-01-2006 06:36 PM
Re: Steps of installing and configuring EVA4000
Which protection level best fit for this scenerio? Does Protection level none protect any data?
Rgds,
Rana
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тАО11-01-2006 07:30 PM
тАО11-01-2006 07:30 PM
Re: Steps of installing and configuring EVA4000
Single - 2 HDD(largest capacity) is resevered
Double - 4 HDD space largest capacity) is resevered
None - No HDD space reserved
Note:
The failure protection level of a DG does not impact the occupancy level
of its constituent disk drives.
Protection level provides the room for the rebuild to happen.
i would suggest single protection level should be fine
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тАО11-01-2006 10:29 PM
тАО11-01-2006 10:29 PM
Re: Steps of installing and configuring EVA4000
What will be the impact of one hard disk failed if I configure protection level none? Please help.
Rgds,
Rana
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тАО11-01-2006 10:49 PM
тАО11-01-2006 10:49 PM
Re: Steps of installing and configuring EVA4000
I would not recommend this though - the purpose of the DPL is to reserve space for this purpose.
This is to ensure you do not get into a situation where you do not have any available space to accomodate a data migration caused by a failed disk.
I have never had this happen but I assume that if a disk fails and there is no space for the data migrate to then you would be OK, if you had another disk failure during this time in the same disk group you would lose the disk group entirely.. I may be wrong on this.. so wait for someone to confirm/Deny.
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тАО11-01-2006 10:54 PM
тАО11-01-2006 10:54 PM
Re: Steps of installing and configuring EVA4000
One more thing, how many IPs do I need to configure EVA4000 in a SAN environment?
Rgds,
Rana