- Community Home
- >
- Storage
- >
- Entry Storage Systems
- >
- Disk Enclosures
- >
- dual controllers
Disk Enclosures
1752796
Members
5625
Online
108789
Solutions
Forums
Categories
Company
Local Language
юдл
back
Forums
Discussions
Forums
- Data Protection and Retention
- Entry Storage Systems
- Legacy
- Midrange and Enterprise Storage
- Storage Networking
- HPE Nimble Storage
Discussions
Discussions
Discussions
Forums
Forums
Discussions
юдл
back
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
- BladeSystem Infrastructure and Application Solutions
- Appliance Servers
- Alpha Servers
- BackOffice Products
- Internet Products
- HPE 9000 and HPE e3000 Servers
- Networking
- Netservers
- Secure OS Software for Linux
- Server Management (Insight Manager 7)
- Windows Server 2003
- Operating System - Tru64 Unix
- ProLiant Deployment and Provisioning
- Linux-Based Community / Regional
- Microsoft System Center Integration
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Blogs
Information
Community
Resources
Community Language
Language
Forums
Blogs
Go to solution
Topic Options
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО09-20-2000 10:59 AM
тАО09-20-2000 10:59 AM
currently on a AutoRaid 12H, there is one scsi bus from the server to one array controller, and then that controller is linked (like a daisy chain) to the other controller. I want to run an scsi bus from the server to each array controller for redundancy and speed... What do I need to do to load balance the controllers, whoever installed the hparray/ARMServer software did not install the man pages..any links out there for commands like arraycfg???
Solved! Go to Solution.
3 REPLIES 3
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО09-20-2000 11:04 PM
тАО09-20-2000 11:04 PM
Re: dual controllers
Kevin,
You balance the load with the LVM. Use for the 'half load' the X controller as the primary path and for the rest the Y controller. For the AutoRAID array is this a useful link for information: http://www.hp.com/essd/model12H_index.html
You balance the load with the LVM. Use for the 'half load' the X controller as the primary path and for the rest the Y controller. For the AutoRAID array is this a useful link for information: http://www.hp.com/essd/model12H_index.html
There is no good troubleshooting with bad data
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО09-20-2000 11:11 PM
тАО09-20-2000 11:11 PM
Solution
Hi,
load balancing can be done at volume group level.
If you do a vgdisplay -v vgXX you can see at Physical volumes the PV Names. One of them should be listed as '/dev/dsk/c?d?t? Alternate Link'.
You can modify the paths by using vgreduce/vgextend.
Example:
AutoRaid LUN 1 bound to vg01
Controller X at SCSI 14 / Instance 8
Controller Y at SCSI 15 / Instance 9
Device for X = /dev/dsk/c8t14d1
Device for Y = /dev/dsk/c9t15d1
When creating vg01 with /dev/dsk/c8t14d1
you can add alternate link with:
vgextend vg01 /dev/dsk/c9t15d1
To change the alternate link first remove the /dev/dsk/c8t14d1 with:
vgreduce vg01 /dev/dsk/c8t14d1
This will automatically switch to /dev/dsk/c9t15d1 as primary.
Now add /dev/dsk/c8t14d1 again with:
vgextend vg01 /dev/dsk/c8t14d1
and you will now get the /dev/dsk/c8t14d1 as the alternate link.
Regards
Andrew
load balancing can be done at volume group level.
If you do a vgdisplay -v vgXX you can see at Physical volumes the PV Names. One of them should be listed as '/dev/dsk/c?d?t? Alternate Link'.
You can modify the paths by using vgreduce/vgextend.
Example:
AutoRaid LUN 1 bound to vg01
Controller X at SCSI 14 / Instance 8
Controller Y at SCSI 15 / Instance 9
Device for X = /dev/dsk/c8t14d1
Device for Y = /dev/dsk/c9t15d1
When creating vg01 with /dev/dsk/c8t14d1
you can add alternate link with:
vgextend vg01 /dev/dsk/c9t15d1
To change the alternate link first remove the /dev/dsk/c8t14d1 with:
vgreduce vg01 /dev/dsk/c8t14d1
This will automatically switch to /dev/dsk/c9t15d1 as primary.
Now add /dev/dsk/c8t14d1 again with:
vgextend vg01 /dev/dsk/c8t14d1
and you will now get the /dev/dsk/c8t14d1 as the alternate link.
Regards
Andrew
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО09-21-2000 01:38 AM
тАО09-21-2000 01:38 AM
Re: dual controllers
Your system has connections for one disk array, two controllers, and one scsi bus but for high availability like redundancy, speed what you mentioned, you need connections for one disk array, two controllers, and two scsi buses.
Requirements are one more scsi adaptor, scsi cable on host side.
This enables you to access your data from unexpected controller, scsi bus disaster, and host scsi adaptor failure.
Each disk array controller should be connected one channel for better load balancing.
Load balancing can be done at LVM level as somebody else said.
Requirements are one more scsi adaptor, scsi cable on host side.
This enables you to access your data from unexpected controller, scsi bus disaster, and host scsi adaptor failure.
Each disk array controller should be connected one channel for better load balancing.
Load balancing can be done at LVM level as somebody else said.
Never say "no" first.
The opinions expressed above are the personal opinions of the authors, not of Hewlett Packard Enterprise. By using this site, you accept the Terms of Use and Rules of Participation.
News and Events
Support
© Copyright 2024 Hewlett Packard Enterprise Development LP