[Info-vax] Reconfiguring VMS 6.2 - Shadow set question

[supervinx]

$ mount dsa0: /shadow=($1$dka100:,$1$dka200:) /system  V47701_sys
%MOUNT-I-SHDWMEMSUCC, _$1$DKA100: (V47701) is now a valid member of the shadow s
et
%MOUNT-I-SHDWMEMFAIL, $1$DKA200: failed as a member of the shadow set
-SYSTEM-W-NOSUCHDEV, no such device available

-----------------------------------------------------------------------------

$       mount dsa1: /shadow=($1$dka300:,$1$dka400:) /system  Oracle
%MOUNT-I-MOUNTED, ORACLE mounted on _DSA1:
%MOUNT-I-SHDWMEMSUCC, _$1$DKA300: (V47701) is now a valid member of the shadow s
et
%MOUNT-I-SHDWMEMFAIL, $1$DKA400: failed as a member of the shadow set
-SYSTEM-W-NOSUCHDEV, no such device available

-----------------------------------------------------------------------------

V47701: sho dev

Device                  Device           Error    Volume         Free  Trans Mnt
 Name                   Status           Count     Label        Blocks Count Cnt
DSA0:                   Mounted              0  V47701_SYS      863790   323   1
DSA1:                   Mounted              0  ORACLE          390150    17   1
$1$DKA100:    (V47701)  ShadowSetMember      0  (member of DSA0:)
$1$DKA300:    (V47701)  ShadowSetMember      0  (member of DSA1:)

-----------------------------------------------------------------------------

DKA200 and DKA400 are missing.
So:
1) Can I remove the shadow sets ? The first involves the system disk ...
2) Or it's better and safer to remove only DKA200 and DKA400 from the shadow ?

Thanks !
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