Hello,
because of high disk load we plan to move from disk (raid1) to ssd.
Are there recommendations for - manufacturer - file sytem - raid1
The Red Hat Storage Administration Guide says: - no raid 1 - ext4 only is this state of the art?
I have searched list,centos.org 2015 - nothing found.
I found in the year 2012 / 2013: https://www.centos.org/forums/viewtopic.php?t=7580 https://www.centos.org/forums/viewtopic.php?t=7175 https://www.centos.org/forums/viewtopic.php?t=3667
Shall I prefer to move to fast disks (15000 rpm)?
Thanks Helmut
On 01/07/2016 06:43 AM, Helmut Drodofsky wrote:
The Red Hat Storage Administration Guide says:
- no raid 1
- ext4 only
is this state of the art?
I'm not sure which version of the guide you're reading. The version for release 6 recommends RAID1 or RAID10, and notes that both ext4 and XFS support the discard mount option.
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/htm...
On 1/7/2016 6:43 AM, Helmut Drodofsky wrote:
because of high disk load we plan to move from disk (raid1) to ssd.
Are there recommendations for
- manufacturer
- file sytem
- raid1
I strongly recommend SSDs that have write buffer protection, implemented via a internal bank of 'supercaps' for any sort of server application. Suitable drives include Intel S3500, Samsung SM863/PM863, Seagate 1200.2 SAS, etc. Note many of these come in varying levels of write endurance, if your application is write/update intensive, such as an OLTP relational database, you want the high write endurance versions.
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Gordon Messmer -
Helmut Drodofsky -
John R Pierce