Hi all

from the document Simplified VMAX Blueprint Guide

VMAX + 5874 & 75 EMC Enginuity™

Solutions Enabler v7 which is in EMC speed

it said to create TDAT devices with 259912 cyl = 236.49 GB on 1000GB SATA drive with Raid6(6+2)

while other document direct us to have at least 8 hypers per disk

if i create 236.49 TDAT on 1000 GB R6(6+2) i will end up with < 4 hypers perdisk

so what the best practics on that, the same goes for other disk sizes and disk groups, the documents contradict each other.

I am looking for the best perofrmance for an environment based completley on Thin provisoning and FAST VP.

I got this from the document mentioned:

for 1TB drives please use the following TDAT device size:

RAID6 (6+2)

device size = 259912 CYL = 237.96 GB

total devices per group 23

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for 450GB Drives

RAID 6 (6+2)

Device size= 260570 CYL =238.56 GB

total devices per group 10

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for 450GB Drives

RAID 1 (2 drives)

Device size= 54282 CYL= 49.70 GB

total devices per group 8

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For 300 GB

RAID 1 (2 drives)

Device size =35960 CYL = 32.92 GB

Total devices  per group 8

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