- Community Home
- >
- Storage
- >
- Entry Storage Systems
- >
- Disk Enclosures
- >
- Re: snapclone or mirrorclone
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
тАО10-22-2008 05:31 PM
тАО10-22-2008 05:31 PM
SolutionPersonally, I don't think the users will see any difference in performance. Sure, there will be some difference... but I think it is negligable compared to the performance cut they might notice after you move Virtual disks to a DG with 40 disks vs. 73 or 95 disks.
Even then they would have to be a high performance user with a pretty high i/o profile on the EVA to notice any really big change.
The short story is, I think you would be fine grouping the 40 disks in with one of your other groups, or both (splitting them to give both groups space (and yes.. trying to keep with the multiple of 8 best practice)). Even if you started 6pm Friday and the leveling was well along it's way by monday morning, I think the price you'd pay is less then if you had a 3rd DG.
Facts...
Protection levels is PER Disk Group. You will lose additional raw space by creating a 3rd DG.
"partial RSS's consisting of 7 and 9 drives will cause a performance issue." - I never actually seen any performance issues when there is a RSS of less/more than 8. It simply means that redundancy is not optimal in 1 set of disks.
"Best thing for you to do is:" - might not be to combine all of your disks into 1 Disk Group. Lot's of reasoning goes into the decesion to have a single or multiple disk groups... and we do not know how your EVA came to have 2 Disk Groups.
Different applications require different i/o performance, internal politics sometimes plays a role in the decision to have one or multiple DG's, etc.
It is very easy to state the Best Practice(s).
Steven
HP Master ASE, Storage, Servers, and Clustering
MCSE (NT 4.0, W2K, W2K3)
VCP (ESX2, Vi3, vSphere4, vSphere5, vSphere 6.x)
RHCE
NPP3 (Nutanix Platform Professional)
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО10-23-2008 12:50 AM
тАО10-23-2008 12:50 AM
Re: snapclone or mirrorclone
Is there any best practise as to how many disks we can add at one time? i.e. is 32 in one go okay?
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО10-23-2008 02:27 AM
тАО10-23-2008 02:27 AM
Re: snapclone or mirrorclone
HDD installation
HP recommends to install (not group) a maximum of 4 HDD at one time. The procedure is the following:
1. insert not more then 4 physical disks
2. wait until the activity indicator on each inserted drive becomes solid green and remains solid for 10 seconds
3. you can proceed with 4 other disks until 32
HDD grouping to the DGs
the best is to check the original RSS layout
if you have any RSS with 6 members i would first saturate those hungry ones and then add the disks in the groups of 8 to have full vertical layout, which should be fairly easy with 18 enclosures
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО10-23-2008 02:32 AM
тАО10-23-2008 02:32 AM
Re: snapclone or mirrorclone
I strongly recommend to install one disk drive at a time and wait until it has been properly recognized in Command View EVA. Yes, this takes a lot of time, but I still see EVAs with duplicate disk drive names which is caused by CV-EVA.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО10-23-2008 05:26 AM
тАО10-23-2008 05:26 AM
Re: snapclone or mirrorclone
We do actually have 2 disks with the same name in another disk group, is this okay? Is there any fix required?
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО10-23-2008 06:03 AM
тАО10-23-2008 06:03 AM
Re: snapclone or mirrorclone
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО10-23-2008 06:13 AM
тАО10-23-2008 06:13 AM
Re: snapclone or mirrorclone
- it is not included in the disk counts
- last time I was searching for it, the icon did not appear in the disk group hierarchy
I find it very confusing if an incorrect number of disk drives shown ;-)
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО10-23-2008 06:17 AM
тАО10-23-2008 06:17 AM
Re: snapclone or mirrorclone
Sorry, Ben, missed the question.
In that case I simply give the visible disk a different name within CV-EVA. After a refresh / new discovery, the view should be correcct.
- « Previous
-
- 1
- 2
- Next »