- Community Home
- >
- Storage
- >
- Entry Storage Systems
- >
- Disk Enclosures
- >
- EVA8400 - "Disk drive failure protection" even tho...
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
тАО05-10-2011 01:17 PM
тАО05-10-2011 01:17 PM
EVA8400 - "Disk drive failure protection" even though 2 largest 450 GB drives free space available
Actual level: None
(Requested level not available)
even though 2 largest 450 GB drives worth of free space available. We always had "Single" level of protection.
Currently - leveling taking place after Group'ing of two new disks (just replaced two failed HDs).
Any thoughts why this we are not getting back to "Single" level protection ?
Thanks
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО05-10-2011 05:02 PM
тАО05-10-2011 05:02 PM
Re: EVA8400 - "Disk drive failure protection" even though 2 largest 450 GB drives free space available
You may aware of that Single protection takes 2 Drive size capacity. After 2 Drive failure the free space may not be available so controller will make Protection to None.
As Requested is already "Single" once levelling completes, It will move back to "Signle" on Actual protection.
This is common and nothing to worry. Just wait till levelling completes and update the status
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО05-10-2011 09:08 PM
тАО05-10-2011 09:08 PM
Re: EVA8400 - "Disk drive failure protection" even though 2 largest 450 GB drives free space available
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО05-10-2011 11:52 PM
тАО05-10-2011 11:52 PM
Re: EVA8400 - "Disk drive failure protection" even though 2 largest 450 GB drives free space available
I thought best practice stated that you should leave 5Gb of space per disk in each disk group. The system uses that spare space to allow for levelling before it goes into the sparing. THat is if you don't use 100% of the diskgoup space.
regards
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО05-10-2011 11:56 PM
тАО05-10-2011 11:56 PM
Re: EVA8400 - "Disk drive failure protection" even though 2 largest 450 GB drives free space available
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО05-11-2011 03:29 AM
тАО05-11-2011 03:29 AM
Re: EVA8400 - "Disk drive failure protection" even though 2 largest 450 GB drives free space available
"Leveling and reconstruction can be performed with a minimum of 5 GB of free space per disk group."
but that is only for static environments. And they recommend to leave even more free capacity for a so-called PDM (Proactive disk management) operation - e.g. the manual ungroup of a suspected disk drive.
To me, that sounds you want to set the so-called "protection level" to double (2). That reserves capacity for a PDM (1) plus capacity for a reconstruct (another 1).
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО05-12-2011 02:53 AM
тАО05-12-2011 02:53 AM
Re: EVA8400 - "Disk drive failure protection" even though 2 largest 450 GB drives free space available
After the leveling completes all will be back to normal.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО05-18-2011 06:58 AM
тАО05-18-2011 06:58 AM
Re: EVA8400 - "Disk drive failure protection" even though 2 largest 450 GB drives free space available
Appears - best thing to do is - add a pair of new disks to the disk-group, then immediately remove the indicted/about-to-be-failing pair of disks. So, leveling can possibly happen between failing-pair and newly-added pair. Rather than, leveling amongst 170 or so disks in that diskgroup (which took about 1+ week to finish in our environment!)
Any thoughts ?
Thanks
Sri
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО05-18-2011 07:33 AM
тАО05-18-2011 07:33 AM
Re: EVA8400 - "Disk drive failure protection" even though 2 largest 450 GB drives free space available
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО05-18-2011 07:51 AM
тАО05-18-2011 07:51 AM
Re: EVA8400 - "Disk drive failure protection" even though 2 largest 450 GB drives free space available
Obviously, if we wait for second failure/indictment to show-up, it may occur in same RSS -- which could degrade that RSS - right ?
Thanks