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Questions tagged [megaraid]

192 questions
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1 answer

Reset MegaCLI error count

I have a system where MegaCli64 -PdList -a0 shows media errors on one disk. After investigating the errors, I've decided not to take any action for now. I'd like to reset the error count, so that MegaCli will show 0 media errors unless there is…
sciurus
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1 answer

What's a "battery relearn" on a LSI MegaRaid?

Our file server just started mailing us about how its battery backup is draining and it's switching from WB to WT mode and so on. I looked through its logs and found that it is configured to automatically do this periodically. It's called "battery…
scobi
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How does Linux tell an LSI Megaraid card to flush its cache before shutdown?

The LSI Megaraid controller has a Battery back up for its write cache, which allows, in the event of an unanticipated power outage, to retain the cached, not yet written data, so it can write it out to disk next time the server is booted up. In the…
bk.
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5 answers

LSI MegaRaid - get HDD temperature

Is there any way to get a drive temperature using MegaCLI or any other utility? Like "tw_cli /cx/px show temperature" in 3ware. OS: Solaris x86.
disserman
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2 answers

How does LSI MegaRAID actually lay out RAID10 sets?

I'm trying to set up a RAID10 set on an LSI MegaRAID controller. It is unclear to me how the RAID controller will actually lay out the RAID set on the physical drives. Part of the problem is that MegaRAID seems to use terms very inconsistently; the…
wfaulk
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4
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Finding the serial number of hard disk drives on a SuperMicro server running MegaRAID SAS 8708ELP

As the title says, I have under my care a SuperMicro server running a hardware RAID 6 with a MegaRAID SAS 8708ELP on Linux. I have two failed disks that I have identified as the drives in slot 2 and 4, howerver, my boss tells me that the drives are…
TuturuJones
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Partition alignment on MegaRAID RAID 1 with 4k sector (advanced format) drives

I want to setup RAID 1 (mirroring) on a LSI MegaRAID SAS 8708EM2 (1078 chipset) with 4k sector (advanced format) drives. To the best of my knowlegde the controller does not officially support 4k sector drives whereas the newer 9xxxx series…
georg
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3 answers

Measuring SSD wear out behind LSI MegaRAID controller?

I'm trying to find out how to measure the total bytes written (or a percentage of maximum expected, either is fine) for a few RAID arrays behind LSI controllers. The controllers are all LSI MegaRAID SAS 9271-8i controllers. I've tried using…
jski
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1 answer

Consistency Check inconsistency logging disabled, too many inconsistencies on VD: 0

We recently purchased an LSI MegaRAID 9266-8i SAS RAID card to replace a failed card in our NAS. Setup of the card went smoothly, I updated the firmware, set up RAID6 with hotswap, and let it initialize. Every so often (once a week or so?) we get…
user1143682
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2 answers

megaraid: Logical Drives at different RAID levels

I am currently using a SuperMicro machine that has an on-board LSI 2208 controller (MegaRAID class). I want to create a single array from two drives and then carve that up into: one RAID1 100GB logical drive one RAID0 logical drive taking up the…
slappyjam
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1 answer

MegaCLI Media Error Count

This morning, I just got a Nagios alarm because of: BRUBLUst01:/usr/local/bin# /opt/MegaRAID/MegaCli/MegaCli64 -PDList -a0 Adapter #0 Enclosure Device ID: 32 Slot Number: 0 Device Id: 0 Sequence Number: 2 Media Error Count: 1 Other Error Count:…
Tourneur Henry-Nicolas
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1 answer

what is the recommended RAID level for applications by MegaRAID 9261-8i

I wanna to know which RAID level is good to set for database usage, webservers and so on when I use MegaRAID SAS 9261-8i or 9263-8i.. I will glad if help me.
fm kad
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All disks show as Unconfigured Bad (UBAD) on RAID controller

Before starting, I will say I would appreciate help but really I need to hear from someone that has experienced this issue and how they solved it because the obvious and go to solutions are not working (believe me I have tried for a week). With that…
ATtheincredibleaf
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1 answer

How do I remove a failing disk from a LSI MegaRAID disk group?

One of the disks in group 0 (EID:Slot 252:4, DiskID 12) is starting to fail it's smart tests: 1 Raw_Read_Error_Rate 0x002f 200 200 051 Pre-fail Always - 1837 200 Multi_Zone_Error_Rate 0x0008 200 200 000 Old_age…
Aaron Digulla
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3 answers

ESXi 6.7 monitor hardware storage not showing usual results

Yesterday 2 of our ESXi hosts were updated from 6.5 to 6.7 (build 8169922), though after doing this we noticed a few quirks when trying to access the storage hardware monitoring. In the web UI typically we'd only see elements listed for the…
Adambean
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