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安裝Softek Replicator軟件之前,先在主機(jī)和備機(jī)上確認(rèn)以下條件都滿足:
1. Requirements
(1)General Requirements
在UNIX平臺上安裝Softek Replicator,需要滿足以下基本條件:
a. 主機(jī)系統(tǒng)(Primary System(s))
注意:The primary volume(on either AIX, HP-UX, Linux or Solaris) must be mounted Read/Write enabled. If the primary is in a Read-Only state, Softek Replicator will fail.
b. 備機(jī)系統(tǒng)(Secondary System(s))
c. LAN or WAN IP network(s) between primary and secondary systems
d. Local data devices(on primary)
e. Disk partition or volume for pstore(on primary)
注意:The pstore disk partition/logical volume cannot be shared by OS or an application for any other usage(i.e. filesystem created on the pstore volume). The pstore device is used as a raw volume device volume device to write binary data and can be corrupted if any other process writes to the pstore partition/logical volume.
f. Mirror devices(on secondary)
g. Journal file directory(on secondary)
h. 每一個(gè)Replication Group,Softek Replicator支持最多1000個(gè)journal files(0 to 999),每個(gè)文件,允許達(dá)到500MB
i. Softek Replicator支持100個(gè)Replication Groups
j. Softek Replicator supports a total maximum of 500 dtc devices(127 for Linux) on a system. An effective means of configuring an efficient system is to place affiliated Softek Replicator devices in the same Replication Group.
k. A single Replication Group cannot have more than 500 devices defined.
l. Softek Replicator Server Resources:
I. 10% CPU available at all times
II. Physical memory allocated exclusively to Softek Replicator for the Big Asynchronous Buffer(BAB)(on primary). Maximum BAB size will vary by Operating System.
III. Network bandwidth to support peak update rates on the primary server.
IV. For Large servers with unpredictable I/O loads; An environment where there is frequent activity in creating large files; or unreliable networks:
1. For a migration , identify and isolate volumes that contain only temporary data and that do not need to be migrated
2. Phase the Full Refresh by creating multiple Replication Groups
3. Use compression on slow networks
(2)Performance
a. If your storage devices support up to 20MB/sec throughput per Replication Group, it may be possible to achieve a throughput rate of approximately 90% of the available network bandwidth with Softek Replicator, when configured properly
b. In a single server loopback configuration, a throughput of approximately 15-20MB/sec per Replication Group can be achieved
(3)Recommended Operating Parameters
This section describes guidelines for configuring Softek Replicator to run optimally. Refer to the Softek Replicator 2.2 Administration Guide for AIX, HP-UX, Linux and Solaris(ML-145145) for more information on configuring the product.
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Softek Replicator Configuration Limits
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Component Minimum Maximum
BAB Memory 32MB 1547MB
Number of dtc Devices 1 *Per group: 500
*Per system: 500
NOTE: For Linux, max of 127 devices on Primary Server
and 255 on Secondary Server
Number of Replication Groups 1 100
Pstore Size 40MB
Number of pstores 1 100
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(4)HP-UX System Requirements
a. Primary system(s) and secondary system(s)
b. Softek Replicator supports data replication with volumes up to 1TB
c. HP-UX 11.0 or 11i(11.11) operating system installed(32-bit/64-bit kernel). It is recommended that you install the same operating system version on both primary and secondary systems
NOTE: Softek Replicator does not support HP-UX 11i version 2
d. At least 14.5MB of disk space must be available on both primary and secondary systems
e. An X-windows environment must be installed to use "dtcperftool", "dtcconfigtool", or "dtcmonitortool", for example, CDE
f. Enough physical memory available to be allocated exclusively to Softek Replicator for the BAB(32MB minimum) on the primary system
(5)Minimum Patch Requirement for HP-UX
In order for Softek Replicator''s loadable driver to install correctly, Softek Replicator2.1.x for HP-UX requires that the s77_800 11.11 som2elf cumulative patch be installed on the HP-UX machine. This only affects systems running a 32-bit kernel. If this patch is not installed, an attempt to execute the "dtcinfo -a" command, or start a group generates the following error messages:
kmadmin: dtc: Object file error in loading kernel module.
mksf: Couldn''t find driver matching arguments
DTC: Object file error in loading kernel module
To determin whether your HP-UX system uses 32-bit or 64-bit hardware, type:
#getconf HW_CPU_SUPP_BITS
To determin whether your HP-UX system uses 32-bit or 64-bit kernel, type:
#getconf KERNEL_BITS
If you have a 32-bit kernel, check if the patch is installed:
a. On HP-UX 11.00
#swlist -v | grep 28172
The following should be display: contents PHKL_28172, r=1.0, a=HP-UX_B.11.00_32/64, v=HP
b. For HP_UX 11i
#swlist -v | grep 29436
The following should be display: contents PHCO_39436, r=1.0, a=HP-UX_B.11.00_32/64, v=HP
If you do not have this patch installed, you may download at the following URL:
http://www2.itrc.hp.com/service/patch/mainPage.do
本文來自ChinaUnix博客,如果查看原文請點(diǎn):http://blog.chinaunix.net/u/12718/showart_66027.html |
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