DOCUMENT:Q65534 30-JUL-2001 [lanman] TITLE :Maximum Number of Mirrored Drives Allowed in OS/2 LAN Man 2.x PRODUCT :Microsoft LAN Manager PROD/VER: OPER/SYS: KEYWORDS: ====================================================================== SUMMARY ======= The number of drives that can be mirrored in OS/2 LAN Manager version 2.x is limited by the maximum number of disk partitions allowed in Microsoft OS/2 version 1.2. In Microsoft OS/2 version 1.2, you can have up to 24 partitions. Drive mirroring sets up two identical partitions that are recognized by the operating system as a single logical drive, and you also need to set aside one partition as the boot partition (this partition can't be mirrored). Thus, the maximum number of mirrored drives that is allowed is 11. For example: 24 <= maximum number of partitions in OS/2 version 1.2 - 1 <= boot partition (can't mirror) ==== 23 22 <= round from 23 (even number of drives required for mirroring) / 2 <= divide by 2 (one logical drive per two partitions) ==== ==> 11 <== Additional query words: duplex ft fault tolerance 2.00 2.10 2.10a 2.20 ====================================================================== Keywords : ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2001.