Willie, CI size for the VVDS is 4096. For 10 trks that computes to 120 CIs in the VVDS. For a SMS managed volume each file will require the following # of bytes: KSDS 530 ESDS 370 Linear 340 Non-VSAM 100 I suspect you're not going to have a problem. Worst case your VVDS goes into extents.
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