- Community Home
- >
- Storage
- >
- Entry Storage Systems
- >
- MSA Storage
- >
- SAN Disk space
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
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
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
11-01-2013 05:45 AM
11-01-2013 05:45 AM
SAN Disk space
Hi'
I have eva4400 san and its has 36 harddisk 146*36=5256
But EVA software Shown
Total: 4642 GB Allocated: 3894 GB Allocation level: 84 % Available: 747 GB Requested: 0 GB Oversubscribed:
total 4642
but its actual 5256
Why its shown 4642 ?
I know its raid configure
So,
What is a formula to get this value 4642 ?
and how to see disk utilization graph value ?
Thanks
Aamir
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
11-01-2013 05:52 AM - edited 11-01-2013 06:12 AM
11-01-2013 05:52 AM - edited 11-01-2013 06:12 AM
Re: SAN Disk space
I'm sure you set the protection level of the diskgroup to "double" - this reserves the space of 4 disks.
From online help:
The disk failure protection level determines the amount of storage space that is reserved in a disk group for data reconstruction if physical disks in the group fail. The reserved space is not a number of physical disks. It is the equivalent amount of storage space spread across all disks in the disk group. The disk failure protection levels are:
Single failure protection. Reserves space within a disk group for data reconstruction if 1 disk fails. The disk group can lose 1 physical disk and maintain the redundancy (Vraid) levels in the group.
Double failure protection. Reserves space within a disk group for data reconstructions if 2 disks fail. The disk group can tolerate the loss of 2 physical disk and maintain the redundancy (Vraid) levels in the group.
None. Reserves no space within a disk group for data reconstruction in case a disk fails. The disk group cannot tolerate the loss of any physical disks and maintain the redundancy (Vraid) levels in the group.
IMPORTANT: HP recommends the use of single or double protection rather than None.
Hope this helps!
Regards
Torsten.
__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.
__________________________________________________
No support by private messages. Please ask the forum!
If you feel this was helpful please click the KUDOS! thumb below!
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
11-01-2013 01:11 PM
11-01-2013 01:11 PM
Re: SAN Disk space
Hi,
Very helpful answer.
Its mean When I manually open two hard disk at same time on SAN
Its recover ?
whether both two hard disk are attached on single eight drive shelve
or any different-different another disk shelves.
its recover?
thanks
aamir
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
11-01-2013 01:19 PM
11-01-2013 01:19 PM
Re: SAN Disk space
This is reserved space, not available for storing data, just used for data recovery if a disk fails.
It does NOT mean 2 disks can fail at the same time. To protect this case, create a vraid6.
Hope this helps!
Regards
Torsten.
__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.
__________________________________________________
No support by private messages. Please ask the forum!
If you feel this was helpful please click the KUDOS! thumb below!