- Community Home
- >
- Storage
- >
- Entry Storage Systems
- >
- Disk Enclosures
- >
- Re: VA7100 (autoraid to raid 1+0)
Categories
Company
Local Language
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
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
Community
Resources
Forums
Blogs
- 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
тАО04-08-2003 08:59 AM
тАО04-08-2003 08:59 AM
We have a VA7100 with LUN created with AutoRaid flavor.
The amount of space available on the VA is very
thin, metrics reports that all datas are stored
in RAID5DP mode, with such a mode, Oracle Write
performance are drastically degraded.
If we free a maximum space, is there a way to force the VA, to balance data to RAID1+0 mode (still using AutoRaid flavor)(indeed changing array RAID control mode not possible after LUN creations).
Thanks in advance,
--Vincent
Solved! Go to Solution.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО04-08-2003 09:08 AM
тАО04-08-2003 09:08 AM
Re: VA7100 (autoraid to raid 1+0)
If you free up 1/2 of your total raw space (ie: you have 500GB raw, then have no more than 250GB assigned to hosts), then it will all migrate to RAID 0/1.
Good luck,
Vince
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО04-08-2003 09:09 AM
тАО04-08-2003 09:09 AM
Re: VA7100 (autoraid to raid 1+0)
to help you I need 'armdsp -a' and 'armlog -e' outputs. Please attach them to your next reply zipped.
Please tell where did you see that everything is in RAID5DP mode - did you use armperf?
Eugeny
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО04-09-2003 05:21 AM
тАО04-09-2003 05:21 AM
Re: VA7100 (autoraid to raid 1+0)
Thanks for your response.
Here is my current configuration:
Redundancy Group:_____________________1
Total Disks:________________________15
Total Physical Size:________________417.232 GB
Allocated to Regular LUNs:__________125.02 GB
Allocated as Business Copies:_______0 bytes
Used as Active Hot Spare:___________33.375 GB
Used for Redundancy:________________93.818 GB
Unallocated (Available for LUNs):___165.018 GB
We have free up a lot of space, but it seems that the optimization (RAID5->RAID1+0) is very slow (only 10% for a average of 24h).Is their a way to accelerate the transfert.
Eugeny, find attached the arm files.
we use both armperf, and launcher GUI for measuring RAID allocation.
Thanks,
--Vincent
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО04-09-2003 05:50 AM
тАО04-09-2003 05:50 AM
Re: VA7100 (autoraid to raid 1+0)
Eugeny
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО04-09-2003 07:49 AM
тАО04-09-2003 07:49 AM
Re: VA7100 (autoraid to raid 1+0)
Eugeny
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО04-09-2003 08:27 AM
тАО04-09-2003 08:27 AM
Solution(Eugeny, I sent you the code to compute this???..)
Until the array has converted the data to RAID 1+0, the array can run significantly slower. This because the array will not perform log-structured RAID 5DP writes ??? which can be very performance efficient.
Use the armperf ARRAY command. This will show the RAID 1+0 and RAID 5DP allocations over time.
I also suggest that you enable prefetch (armmgr ???P on).
I don???t think the rebuild had much effect. It looks like you were moving/adding disks or reset the controller? If not, you should have hp support review the logs.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО04-10-2003 02:28 AM
тАО04-10-2003 02:28 AM
Re: VA7100 (autoraid to raid 1+0)
Thanks for your response.
Roger, are you roger buckthal?
How does you calculate the allocated capacity of 121GB to convert to RAID 1+0 only operation in our case.
You could send me your response,if you want, to following mail address:
vincent.abad@hp.com
Thanks in advance,
--Vincent