- Community Home
- >
- Servers and Operating Systems
- >
- HPE ProLiant
- >
- ProLiant Servers (ML,DL,SL)
- >
- On write cache on SC40Ge on DL160G5
ProLiant Servers (ML,DL,SL)
1753783
Members
6823
Online
108799
Solutions
Forums
Categories
Company
Local Language
back
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
back
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
Blogs
Information
Community
Resources
Community Language
Language
Forums
Blogs
Topic Options
- 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
04-22-2009 08:04 AM
04-22-2009 08:04 AM
On write cache on SC40Ge on DL160G5
The question is - is it possible to turn on cache on writing on SC40Ge
controller with SATA disks (2 SATA disk as RAID 1) in DL160G5.
Boot sequence indicates the following (CentOS 5.3 aka RHEL 5.3 , latest mpt driver from HP site):
SCSI device sda: drive cache: write through
SCSI device sda: 976562176 512-byte hdwr sectors (500000 MB)
sda: Write Protect is off
sda: Mode Sense: 03 00 00 08
SCSI device sda: drive cache: write through
sda: sda1 sda2 sda3
"drive cache: write through" indicates that on write cache is not used.
Controllers driver info:
[root@venus ~]# cat /proc/mpt/version
mptlinux-4.00.13.04
Fusion MPT base driver
Fusion MPT SAS host driver
Fusion MPT SPI host driver
Fusion MPT ioctl driver
[root@venus ~]# cat /proc/mpt/summary
ioc0: LSISAS1064E B3, FwRev=01172a00h, Ports=1, MaxQ=163, IRQ=177
[root@venus ~]#
Also, if the problem with cache is actual for SATA disks, is it
possible to turn write cache on with SAS disks on this controller.
With what controller do you recommend to replace SC40Ge in order to
improve I/O with already installed SATA disks in DL160G5.
controller with SATA disks (2 SATA disk as RAID 1) in DL160G5.
Boot sequence indicates the following (CentOS 5.3 aka RHEL 5.3 , latest mpt driver from HP site):
SCSI device sda: drive cache: write through
SCSI device sda: 976562176 512-byte hdwr sectors (500000 MB)
sda: Write Protect is off
sda: Mode Sense: 03 00 00 08
SCSI device sda: drive cache: write through
sda: sda1 sda2 sda3
"drive cache: write through" indicates that on write cache is not used.
Controllers driver info:
[root@venus ~]# cat /proc/mpt/version
mptlinux-4.00.13.04
Fusion MPT base driver
Fusion MPT SAS host driver
Fusion MPT SPI host driver
Fusion MPT ioctl driver
[root@venus ~]# cat /proc/mpt/summary
ioc0: LSISAS1064E B3, FwRev=01172a00h, Ports=1, MaxQ=163, IRQ=177
[root@venus ~]#
Also, if the problem with cache is actual for SATA disks, is it
possible to turn write cache on with SAS disks on this controller.
With what controller do you recommend to replace SC40Ge in order to
improve I/O with already installed SATA disks in DL160G5.
1 REPLY 1
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
07-17-2009 12:53 PM
07-17-2009 12:53 PM
Re: On write cache on SC40Ge on DL160G5
I have seen this same issue of poor performance and high IOWAIT times on the DL160 G5.
Did you ever find a replacement controller or a way to improve this?
Did you ever find a replacement controller or a way to improve this?
The opinions expressed above are the personal opinions of the authors, not of Hewlett Packard Enterprise. By using this site, you accept the Terms of Use and Rules of Participation.
News and Events
Support
© Copyright 2024 Hewlett Packard Enterprise Development LP