Hello
I have several HP EliteDesk 800 G1 SFF with RAID1 on Server Express Chipset SATA RAID Controller (Intel Q87 Express, PCI\VEN_8086&DEV_2822&SUBSYS_1998103C&REV_04).
Periodically (1 every 2-3 days) I run "Verification and Repair" and every time I got "Parity errors" ("Parity errors: 41" in example).
After repairing I run Verification and Repair againg.
And again I got several "Parity errors".
This errors appears on any worstation with Intel SATA RAID.
Their appearance does not depend on the settings RAID controller and RAID volume in Windows - "Write back", "Flush buffers", etc.
Their appearance does not depend on RST and drivers version.
Blocks with media errors:0
Archive created between checks not contain errors, size ofarchive - approximately 100 Gbytes.
I try this solution and disable Windows write-cache buffer flushing and set the Intel RST program to cache mode: write back.
Intel RST 12.5 Repeats Verification & Repairing RAID 5
I check again and again got errors.
What are these errors?
Why do they appear?
As the controller corrects them?
Why, if any is not broken integrity of the archives?
How to avoid the error?
Example report:
---------
Volume -hidden-: Verification and repair complete.
System Report
System Information
OS name: Microsoft Windows 7 Professional OS version: 6.1.7601 Service Pack 1 7601 System name: -hidden- System manufacturer: Hewlett-Packard System model: HP EliteDesk 800 G1 SFF
Processor: GenuineIntel Intel64 Family 6 Model 60 Stepping 3 3.401 GHz
BIOS: Hewlett-Packard, L01 v02.65
Intel® Rapid Storage Technology enterprise Information Kit installed: 13.2.0.1016 User interface version: 13.2.0.1016
Language: English (United States)
RAID option ROM version: 12.5.0.1815
Driver version: 13.2.0.1016
ISDI version: 13.2.0.1016
Storage System Information
RAID Configuration
Array Name: SATA_Array_0000
Size: 3,815,457 MB
Available space: 2,048,033 MB
Number of volumes: 1
Volume member: -hidden-
Number of array disks: 2
Array disk: W7200ZAR
Array disk: W7201AH6
Disk data cache: Disabled
Volume name: -hidden-
Status: Normal
Type: RAID 1
Size: 883,712 MB
System volume: Yes
Data stripe size: 64 KB
Write-back cache: Off
Initialized: Yes
Parity errors: 41
Blocks with media errors: 0
Physical sector size: 4096 Bytes
Logical sector size: 512 Bytes
Hardware Information
Controller name: Intel(R) Desktop/Workstation/Server Express Chipset SATA RAID Controller
Type: SATA
Mode: RAID
Number of SATA ports: 3
Number of volumes: 1
Volume: -hidden-
Number of spares: 0
Number of available disks: 0
Rebuild on Hot Plug: Disabled
Manufacturer: 32902
Model number: 10274
Product revision: 4
Direct attached disk: W7200ZAR
Direct attached disk: W7201AH6
Disk on Controller 0, Port 0
Status: Normal
Type: SATA disk
Location type: Internal
Usage: Array disk
Size: 1,863 GB
System disk: No
Disk data cache: Disabled
Command queuing: NCQ
Transfer rate: 6 Gb/s
Model: ST2000VN000-1HJ164
Serial number: W7200ZAR
SCSI device ID: 0
Firmware: SC60
Physical sector size: 4096 Bytes
Logical sector size: 512 Bytes
Disk on Controller 0, Port 1
Status: Normal
Type: SATA disk
Location type: Internal
Usage: Array disk
Size: 1,863 GB
System disk: No
Disk data cache: Disabled
Command queuing: NCQ
Transfer rate: 6 Gb/s
Model: ST2000VN000-1HJ164
Serial number: W7201AH6
SCSI device ID: 1
Firmware: SC60
Physical sector size: 4096 Bytes
Logical sector size: 512 Bytes
ATAPI device on Controller 0, Port 2
Location type: Internal
Transfer rate: 1.5 Gb/s
Model: hp DVD A DS8ABSH
Serial number: 466412924713
Firmware: AHS6