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тАО08-25-2002 11:47 PM
тАО08-25-2002 11:47 PM
va7100 raid 5 capacity
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тАО08-25-2002 11:58 PM
тАО08-25-2002 11:58 PM
Re: va7100 raid 5 capacity
First of all, VA7100 does NOT store in RAID 5, but in RAID 5DP, which, in theory, is RAID 6. With this, you can lose 2 disks and still have all LUN information intact.
Also, you CANNOT store RAID 5DP in a VA7100. You have to store it in AutoRAID, which is a combination of RAID 1+0 and RAID 5DP.
Having said that, it is very difficult to calculate the amount of data stored in RAID 5DP in any configuration possible. This is because the controllers put data in RAID 5DP intelligently themselves i.e. you cannot monitor how much data is actually in RAID 5DP. Only the controllers know the "controlled RAID mess" they created. :-)
HTH,
Vince
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тАО08-26-2002 12:13 AM
тАО08-26-2002 12:13 AM
Re: va7100 raid 5 capacity
Like Vincent says, VA is AUTO, it decides if use RAID 5DP or RAID0+1 (depends of total LUNs size, total disk space etc..)
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тАО08-26-2002 12:33 AM
тАО08-26-2002 12:33 AM
Re: va7100 raid 5 capacity
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тАО08-26-2002 07:02 AM
тАО08-26-2002 07:02 AM
Re: va7100 raid 5 capacity
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тАО08-26-2002 08:13 AM
тАО08-26-2002 08:13 AM
Re: va7100 raid 5 capacity
1 - RAID 5 on the VA is marketed as RAID 5-DP, this is infact RAID6 (two parity blocks).
2 - I'm assuming 36GB disk format to 32GB & 73GB disks format to 69GB. so the calculation is
(7-2)* size
therefore 7x36GB ==> 5x32 = 160GB
and 7x72GB ==> 5x69 = 345GB
Regards
Tim
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тАО08-26-2002 10:26 AM
тАО08-26-2002 10:26 AM
Re: va7100 raid 5 capacity
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тАО08-26-2002 10:33 AM
тАО08-26-2002 10:33 AM