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Swappable devices RAID 1 (mirrored volumes) RAID 5 RDF devices with two local copies (default, can be controlled from SP) Same size and emulation Not swappable devices. The following devices are not swappable:

Parity RAID (parity and data) CKD Stripe (RAID 1/0) BCV, DRV SFS WORM AS400, ICOS, ICL Saved and virtual snap devices Standard, unprotected volumes (default, can be controlled from SP) Targets of snap sessions

Other configuration restrictions:

Same disk Two mirrors of the same device should never reside on the same disk (for example, 1a:C0 – new syntax 1a:00).

Same port Two mirrors of the same device should never reside on the same port (for example, 1a:C – new syntax 1a:0).

Same loop All mirrors of the same RAID 1 device should never reside on the same disk loop (for example, 1a:C with 16a:C – new syntax: 1a:0 with 16a:0). (This is not applicable to RMS.)

Power zones All mirrors of the same RAID 1 device should never reside on the same power zone. (Applicable to Panther and Rhino only.)

Same DA All mirrors of the same RAID 1 device should not reside on the same DA (CPU) (for example, 1a).

Same slot All mirrors of the same RAID 1 device should not reside on the same director (slot) (for example, 1a with 1b).

Dual-Initiator All mirrors of the same RAID 1 device should not reside on the same dual- initiator pair (for example, 1a with 16a). (This is not applicable to RMS.)

  • Dual-Initiator Two mirrors of the same RAID 1 device should never reside on the same DA and

dual-initiator pair (for example, 1a with 2a).

69/70/5671 code (Symmetrix DMX and RMS) Configuration rules for the Symmetrix DMX and RMS families are relative in manner. Optimizer can improve or maintain protection, but never decrease the level of protection. However, some restrictions should always be followed.

5771/72/73 code (Symmetrix DMX and RMS) Configuration rules for the Symmetrix DMX and RMS families are relative in manner. Optimizer can improve or maintain protection, but never decrease the level of protection. However, some restrictions should always be followed.

  • Swappable devices

    • RAID 1 (mirrored volumes)

    • RAID 5

    • RAID 6 (72+)

    • RDF devices with two local copies (default, can be controlled from SP)

EMC Symmetrix Optimizer A Detailed Review

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