Title: | "ASK THE WIZARDS" |
Moderator: | QUARK::LIONEL |
Created: | Mon Oct 30 1995 |
Last Modified: | Mon May 12 1997 |
Last Successful Update: | Fri Jun 06 1997 |
Number of topics: | 1857 |
Total number of notes: | 3728 |
Return-Path: "VMS001::WWW"@vms001.das-x.dec.com Received: by vmsmkt.zko.dec.com (UCX V4.1-12, OpenVMS V6.2 VAX); Mon, 24 Feb 1997 16:28:46 -0500 Received: from vms001 by mail12.digital.com (8.7.5/UNX 1.5/1.0/WV) id QAA12950; Mon, 24 Feb 1997 16:22:56 -0500 (EST) Date: Mon, 24 Feb 1997 16:24:12 -0500 Message-Id: <[email protected]> From: "VMS001::WWW"@vms001.das-x.dec.com (24-Feb-1997 1624) To: [email protected], [email protected], [email protected] Subject: Ask the Wizard: '[email protected]' X-VMS-To: [email protected] Remote Host: (null) Browser Type: Mozilla/3.01-C-CIS1196b (Macintosh; I; PPC) via proxy gateway WebTrack-HTTPP/1.2 libwww/2.17 Remote Info: <null> Name: Jonathan Fuld Email Address: [email protected] CPU Architecture: Alpha Version: v 6.2 Questions: I want to wide area cluster from Southern California to Boulder, Co using two Alpha Server 2100's in Southern California and two in Boulder, Co. I also want wide area disk shadowing using DEC's storage work solutions including RAID. How do I do it? Can we wide area disk shadow non-dec disks/raid? Thanks, Jonathan
T.R | Title | User | Personal Name | Date | Lines |
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1634.1 | RTR, Database-Level Synchronization | XDELTA::HOFFMAN | Steve, OpenVMS Engineering | Thu Feb 27 1997 14:46 | 20 |
VMScluster software supports the configurations that are defined in the VMScluster Software Product Description (SPD). The distance between Boulder CO and Southern CA exceeds the maximum supported distance for a single VMScluster. (The current supported maximum node seperation is 150 miles, little more than the typical commuting distance in Southern California.) It does not, however, exceed the maximum distance for a bridged or point-to-point connection for protocols such as DECnet and IP. Products such as DEC RTR and the distributed transaction manager can be used to keep remote databases in synchronization, and to recover from problems such as system failures and failed communications links. Configuring a VMScluster and performing volume shadowing over the typical (relatively low-speed) point-to-point link will not likely have acceptable performance characteristics. |