My predecessor installed Nike array enclosures, hardware mirroring. When he
configured them with inconsistent transient  space, excluding ldev1 which is
75%, some are 100, and some are 75. See below:

LDEV :     1 -- (MPEXL_SYSTEM_VOLUME_SET:MEMBER1)
 Device    |   16411488        |    8088112 ( 49%) |    8323376 ( 51%) |
 Permanent |   12308592 ( 75%) |    7978432 ( 49%) |    4330160 ( 26%) |
 Transient |   12308592 ( 75%) |     109680 (  1%) |    8323376 ( 51%) |

LDEV :     2 -- (MPEXL_SYSTEM_VOLUME_SET:MEMBER2)
 Device    |   16411488        |   10515648 ( 64%) |    5895840 ( 36%) |
 Permanent |   16411488 (100%) |   10515648 ( 64%) |    5895840 ( 36%) |
 Transient |   16411488 (100%) |          0 (  0%) |    5895840 ( 36%) |

LDEV :     3 -- (MPEXL_SYSTEM_VOLUME_SET:MEMBER3)
 Device    |   16411488        |   10427488 ( 64%) |    5984000 ( 36%) |
 Permanent |   16411488 (100%) |   10427488 ( 64%) |    5984000 ( 36%) |
 Transient |   16411488 (100%) |          0 (  0%) |    5984000 ( 36%) |

LDEV :     4 -- (MPEXL_SYSTEM_VOLUME_SET:MEMBER4)
 Device    |   16411488        |   10482432 ( 64%) |    5929056 ( 36%) |
 Permanent |   16411488 (100%) |   10482432 ( 64%) |    5929056 ( 36%) |
 Transient |   16411488 (100%) |          0 (  0%) |    5929056 ( 36%) |

LDEV :     5 -- (MPEXL_SYSTEM_VOLUME_SET:MEMBER5)
 Device    |   16411488        |    8183232 ( 50%) |    8228256 ( 50%) |
 Permanent |   12308608 ( 75%) |    6400304 ( 39%) |    5908304 ( 36%) |
 Transient |   12308608 ( 75%) |    1782928 ( 11%) |    8228256 ( 50%) |

LDEV :    11 -- (MPEXL_SYSTEM_VOLUME_SET:MEMBER11)
 Device    |   16411488        |    8041824 ( 49%) |    8369664 ( 51%) |
 Permanent |   12308608 ( 75%) |    6400688 ( 39%) |    5907920 ( 36%) |
 Transient |   12308608 ( 75%) |    1641136 ( 10%) |    8369664 ( 51%) |



My question is: is the inconsistency with the transient space the cause of MPE
using ldev 5 and 11 more than the others ldev's? As you can see they are all the
same size and for what I understand mpe writes to the disc drives equally. Am I
under the wrong  impression?

I have installed software mirroring in my previous shop, don't have much
experience with Nike drives, I have always configured, again with the exception
of ldev 1, 100% transient space.

Are Nike drives treated differently?

Would changing the transient space to 100% solve the problem?


TIA
Bonnie Roman
HP3000 'trying to be a good' System Admin
World Color Press