Every time I run the Verification it finds "verification errors". (128, 77, 26 the last three times out)
I have 2 300 GB (10,000 RPM) drives set up as RAID 1.
Given that there is no parity, what do these "verification errors" mean?
Is one of my drives beginning to fail?
How can I troubleshoot this further?
P.S. The general answer for this should be included in the standard Help for the Intel Rapid Storage Technology application.
The "verification errors" are sectors whose contents on disk 1 and disk 2 differ. I observed the same issue several times even if all previous system shutdowns were clean.
Once I used sleuthkit (sleuthkit.org) from a Linux Live-CD (grml.org) to check which files are affected: All those differing sectors where part of C:\pagefile.sys. This suggests that pending writes to swap area might not be flushed to both disks on shutdown. This should be harmless.
Any info from Intel would be appreciated.
Further observations suggest that a few verification errors are reported in most cases (tested with RST 10.6.0.1002).
Another verification (with "repair" unchecked) from today reported 34 verification errors. Comparing both drives under grml Linux produced the same result: All differing sectors were part of C:\pagefile.sys.
Is this as expected?
Is this fixed in newer drivers?
Are writes to Windows swap space possibly handled differently (e.g. not always mirrored) ?
@ Intel: Ping :-)
Very interesting; thanks for posting. At work we've tried Windows 7 mirroring, which seems to be trouble prone at the very least, and AMI BIOS mirroring, which as far as I can tell doesn't even have a monitoring program such as the Intel program that we're discussing here.
Four month ago, I moved the Windows swap file pagefile.sys to a non-RAID volume (actually the remaining space from SSD cache). Several runs of "verification" never reveals any error since then.
Conclusion: Sectors from Windows swap file are not flushed properly to IRST RAID1 volumes. This results in misleading verification errors.
Is this fixed in newer (> 10.8.0.1003) IRST versions?
@Intel: Ping^2 :-)
We have not seen issue being reported with Windows* swap files and Intel(R) Rapid Storage Technology RAID volumes. Still you may try using a newer release of Intel(R) Rapid Storage Technology, sucy as Intel(R) Rapid Storage Technology 11.2 and see if this helps:
On the download page, 126.96.36.1996 is only advertised for Intel Desktop boards. Is it safe to use this version on a non-Intel MB with a BIOS which officially only supports IRST 10.8.0.1003?
IIRC there were some reports regarding regressions in CSMI support of some 11.* drivers. Does CSMI_SAS_STP_PASSTHRU still work with 188.8.131.526?
(I'm author and maintainer of the Windows version of smartmontools, so it is mandatory that pass-through functionality works on my machines)
Same questions apply to newer IRST 184.108.40.2067 :-)
Intel(R) Rapid Storage Technology has not been tested using such third party software utility.
You may try Intel(R) Rapid Storage Technology 11.2 under your own convenience to see if these features on your software are still functional for you and to troubleshoot the verification errors you mentioned.
A broken CSMI pass-through support would not only affect third-party products. It likely would also break pass-through related functionality of Intel SSD Toolbox (as reported here for RSTe 220.127.116.118). This leads to the following new version of my second question :-)
Do SMART, SSD optimizer and firmware update functions of Intel SSD Toolbox work properly for Intel SSDs behind IRST 18.104.22.1686 and/or 22.214.171.1247 ?
S.M.A.R.T. information does not go through Intel(R) Rapid Storage Technology, in which applications trying to read these values from the drives will fail. Still, S.M.A.R.T. alerts generated and shown by Intel(R) Rapid Storage Technology if this happens.
concerning SSD Toolbox you will need to check through the corresponding support community creating a new thread or channel of support using the contact information here:
No! SMART information goes through IRST 10.* (and older) because it implements CSMI (Common Storage Management Interface) which includes pass-through functionality for ATA commands. This nice feature allows Intel SSD Toolbox (and third party tools like smartmontools) to access SMART info and provide other functionality (optimizer, firmware update) even for drives in a RAID configuration.
My question was whether this is still the case for the IRST 11.2.* version you recommended.