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тАО10-10-2000 02:52 PM
тАО10-10-2000 02:52 PM
We're going to configure 2 hotspares at 48GB and 73GB.
What is the number of array groups I can have.
Thanks in advance
Solved! Go to Solution.
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тАО10-11-2000 06:55 AM
тАО10-11-2000 06:55 AM
SolutionOne DKU holds 64 disks, or 16 disk groups. Once you add a hot spare that takes up one of the disk groups. You can mix different size spares in that "group" You will use 2 of the 4 drive bays in that group, leaving 2 for other spares.
This leaves you 15 drive bays, or cannisters (cans) for data disks.
The XP256 goes up to 256 disks by using 4 DKU's - 4 * 64. The XP512 can have 512 disks. I'm not sure if they do that by doubling the number of DKU's or increasing the number of disks that can go in a DKU.
If your customer already has the XP on-site simply open the door and count the cans. Then divide by 4.
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тАО10-26-2000 12:36 PM
тАО10-26-2000 12:36 PM
Re: xp512 array groups
I got some more information today. The XP512 can have up to 96 disks in a DKU. They are putting a larger number of smaller form factor drives in the same size cabinet. You should be able to get up to 24 disk arrays in a single cabinet.
They have also added 2 more cabinets to the configuration for a total of 6. That's a total of 576 disks. You lose capacity though when you add hot spares.
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тАО06-16-2001 08:40 AM
тАО06-16-2001 08:40 AM
Re: xp512 array groups
The R2 (second right side cabinet) can hold 24 array groups, as can L1 and L2 (the first two left side cabinets).
The R3 and L3 cabinets (3rd cabinets on the left and right) hold 64 drives instead of the 96 that the R1, R2, L1, L2 cabinet hold. This makes for 16 array groups.
So, R1, R2, L1, L2 at 96 disks + R3, L3 at 64 disks = a total of 512 drives, including spares.
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тАО06-18-2001 03:22 AM
тАО06-18-2001 03:22 AM
Re: xp512 array groups
8 drives are exclusively reserved for hot spares (the yellow ones). So 504 drives can be used for operation.
I you want more spares, you can have up to 16 total, taking 8 off the operational ones.
Regards
Peter