Questions tagged [megaraid]
The megaraid tag has no usage guidance.
200
questions
19
votes
9
answers
40k
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MegaCli: Get the /dev/sd* device name for a logical drive
Let's say I know the drive I want is on Adapter 8, Virtual Drive 0, is there a way to get the Linux device name (e.g. /dev/sdt)? I am on RHEL 6.2.
-pdlistdisplays a WWN value for each physical drive, ...
- 417
18
votes
3
answers
16k
views
Suddenly slow RAID performance
We recently noticed our database queries have been taking much longer than usual to run. After some investigation, it looks like we're getting very slow disk reads.
We've run into a similar problem ...
- 361
11
votes
2
answers
24k
views
How can I get an email alert when RAID array is degraded? VMware ESXi 5.0, MegaRAID SAS 9260-4i
We have recently bought a "white box" server to run VMware ESXi 5.0 (we're planning to use the vSphere 5 Essentials Kit). According to VMware's Compatibility Guide, the server's LSI Logic MegaRAID SAS ...
- 373
10
votes
2
answers
3k
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Why is my RAID1 read access slower than write access?
I have done some simple performance tests and it seems that reading from my RAID1 is slower than writing:
root@dss0:~# for i in 1 2 3; do dd if=/dev/zero of=/dev/sda bs=1048576 count=131072; done
...
- 1,336
8
votes
6
answers
16k
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How to create Raid 10 with megacli
I have OpenFiler storage server.
Without installing Windows and MSM, I want to create raid10 array from disks 2 to 21.
I have already successfully installed MegaCli to OpenFiler but I'm stuck in ...
- 1,056
8
votes
6
answers
23k
views
MegaRAID JBOD substitute
It seems that certain MegaRAID chips don't support JBOD (unfortunately).
I've read online that to make these controllers act as a pass-through, I should configure the disks in RAID0.
What RAID0 ...
- 690
7
votes
1
answer
11k
views
How do I extend a RAID5 array with storcli?
I just bought a new disk. How do I extend an existing RAID array without losing data?
- 974
7
votes
5
answers
16k
views
LSI Megaraid alarm - clearing hotspare
I have several Supermicro servers with LSI Megaraid controllers, 9266-8i. One recently lost a drive; I replaced it as usual, but it is still beeping on reboot. It is set up as RAID 10 + hotspare.
...
- 93
7
votes
2
answers
9k
views
LSI 9285-8e and Supermicro SC837E26-RJBOD1 duplicate enclosure ID and slot numbers
I am working with 2 x Supermicro SC837E26-RJBOD1 chassis connected to a single LSI 9285-8e card in a Supermicro 1U host. There are 28 drives in each chassis for a total of 56 drives in 28 RAID1 ...
- 4,221
7
votes
0
answers
6k
views
PERC MegaRAID S.M.A.R.T. Status is not matching smartctl's - looking for clues what's wrong with the HDD
I'm getting strange SMART error from MegaCli on Dell R720xd and PERC H710P with five 4Tb SATA drives in RAID5
/opt/MegaRAID/MegaCli/MegaCli64 -PDList -aALL
gives me some "Failure Seq Event Number"
...
- 483
6
votes
3
answers
27k
views
smartctl & megaraid: how to find the right device node for an adapter #
I can list physical drives on all megaraid adapters using:
megacli -PDList -aALL
This will display an adapter # for each adapter, and then list the physical drives attached to them.
The individual ...
- 379
6
votes
9
answers
29k
views
LSI MegaRAID Expected Chip Temperature?
We recently built a replicating SAN array from 2x Dell R720XD's, we are using LSI 9270-8i MegaRAID cards with CacheCade 2.0, BBU and Write Back cache enabled.
Our cards are showing HUGE chip ...
- 659
6
votes
3
answers
27k
views
Configuring RAID 10 using MegaRAID Storage Manager on an LSI 9260 RAID card
Using MegaRAID Storage Manager 13.04 on an LSI 9260 RAID card, which is the correct way to create RAID 10 using 8 drives with maximum redundancy?
There appears to be multiple ways to reach the same ...
- 161
6
votes
1
answer
21k
views
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 ...
- 879
6
votes
2
answers
11k
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Do I need to initialize a MegaRAID virtual disk after adding it?
I have an AVAGO 3108 MegaRAID controller. I added a virtual disk with the storcli64 command below. Do I also need to run storcli /c0/v0 start initialization?
storcli64 /c0 add vd type=r6 drives=0:0-...
- 593
6
votes
5
answers
19k
views
LSI RAID: Write cache policy affects read performance?
I have a server with a LSI MegaRAID SAS 9260-4i controller, RAID-5 with 3 x 2 TB disks. I did some performance testing (with iozone3) and the numbers show clearly that the write cache policy affects ...
- 548
6
votes
1
answer
4k
views
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 ...
- 12.7k
5
votes
2
answers
2k
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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 ...
- 768
5
votes
5
answers
11k
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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.
- 1,850
5
votes
2
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4k
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Where to get storcli64 for Linux from LSI MegaRAID now that Broadcom has taken over?
I need the Linux shell interface, storcli64 for the Dell PERC H700 (aka LSI MegaRAID) as explained here and here, but the download links all appear to be defunct.
How can I get the appropriate files ...
- 1,185
5
votes
2
answers
6k
views
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 ...
- 6,908
4
votes
1
answer
10k
views
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,...
- 41
4
votes
3
answers
4k
views
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 ...
- 921
4
votes
2
answers
2k
views
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 ...
- 75
4
votes
1
answer
6k
views
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 ...
4
votes
1
answer
2k
views
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 ...
- 323
4
votes
1
answer
5k
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Consistency Check inconsistency logging disabled, too many inconsistencies on VD: 0 [duplicate]
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 ...
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4
votes
1
answer
149
views
How to configure a LSI MegaRAID controller to host non-RAID backup disks which allow hot swap
I'm running a server with a LSI MegaRAID controller that has 4 slots in the backplane for 4 SATA HDDs. Two of those slots are used for HDDs which are configured as RAID1 which is used as the "...
- 43
3
votes
3
answers
6k
views
Which drive in RAID has bad sectors?
I have 4 physical drives in a single virtual drive using an LSI MegaRaid SAS controller. It seems (at least) one of the drives has bad sectors because:
io errors occur when attempting to back up some ...
- 325
3
votes
1
answer
7k
views
Convert single disk raid0 to raid1 on an LSI megaraid controller
I have a server with an LSI Megaraid raid controller which has a single disk for the OS configured in raid0
What i want to do, is add a second brand new disk for redundancy and convert the raid0 to ...
3
votes
1
answer
3k
views
MegaCli: when did a drive fail?
Using MegaCli64, is there a way to find out when a hard disk failed?
I.e., /opt/MegaRAID/MegaCli/MegaCli64 -ShowSummary -aALL shows
Connector : Int.Ports 0-3<Internal><...
- 133
3
votes
2
answers
23k
views
LSI MegaRaid warning: Patrol Read can't be started
We run a HyperV server on RAID-6 (the OS is Windows Server 2008 R2). The hardware is LSI MegaRaid SAS 8704EM2 controller, with 4x 1TB WesternDigital SATA drives. The server is up & running on this ...
- 131
3
votes
1
answer
1k
views
Optimal RAID10 configuration for 8 disks and two volumes?
I have an Open-E file server with 8 SAS disks and a MegaRAID 9271-8i controller and I want to configure two logical RAID10 volumes of identical size. One volume has about 66% write access and 33% read ...
- 1,336
3
votes
1
answer
52
views
what is the recommended RAID level for applications by MegaRAID 9261-8i [duplicate]
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.
- 31
3
votes
3
answers
13k
views
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 ...
- 153
3
votes
2
answers
2k
views
StorCLI: storcli show and "Hlth: Opt": how exhaustive is this?
I'm working on a script using StorCLI (Ver 1.21.06).
When I run:
./storcli show
I get (abbreviated):
Status Code = 0
Status = Success
As well as:
Hlth:
Opt
Q1. I'm curious to know what the ...
- 14k
3
votes
3
answers
2k
views
LSI Cachecade Pro 2.0 with RAID10 SSD Cache?
I'm trying to add a RAID10 SSD Cache to a VD by this command:
[root@livecd storcli]# ./storcli64 /c0 add vd cachecade type=r10 drives=252:4,252:5,252:6,252:7 assignvds=0
Controller = 0
Status = ...
- 529
3
votes
1
answer
1k
views
Migrating RAID6 array from HP SmartArray P600 to LSI MegaRAID SAS 8888ELP
My customer has an external RAID6 array (8x 1TB in HP MSA60 enclosure) attached to HP SmartArray P600 controller. They have now decided to replace the server and the new one comes with LSI MegaRAID ...
- 25k
3
votes
1
answer
11k
views
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 ...
- 974
3
votes
1
answer
3k
views
LSI RAID card commissioned hot spare
My company has an Open-E based file server (Celeros) that uses near-line SAS drives in RAID6 configuration managed by an LSI 9266-8i RAID card. We currently have one "dedicated hot spare" drive, no "...
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3
votes
1
answer
1k
views
Megaware Raid 10
I have 22 disks and would like to create a Raid 10. Unfortunately my raid controller (MegaRAID SAS 9260-8i) is only capable to handle 8 arrays within a RAID 10. Because of that I could only use 16 ...
- 165
3
votes
1
answer
3k
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MegaCLI / MegaRAID Drive Groups
In the MegaRAID SAS Software User Guide it is stated that a Drive Group includes one or more virtual drives. An excerpt from the document is:
"A virtual drive is a partition in a drive group that is ...
- 31
3
votes
1
answer
5k
views
Should I enable "Patrol Read" on SSD drives?
LSI, Intel and Dell RAID controllers (perhaps others) have a "Patrol Read" feature to try to spot when a drive is failing before it completely fails.
LSI seems to disable patrol read on SSD by ...
- 459
3
votes
0
answers
1k
views
MegaCLI Doesn't allow configured and unconfigured drives with no foreign configs found
I'm fairly new to MegaCLI and I've been having this one issue, after running
megacli -CfgLdAdd -r1 [252:0,252:1,252:2,252:3,252:6,252:7] -a0
I get the error
Mix of configured and unconfigured ...
3
votes
0
answers
5k
views
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 ...
3
votes
0
answers
3k
views
How to identify disk make and model attached to a MegaRAID controller?
I have a system with a LSI MegaRAID SAS 9271-4i and some attached disks in a RAID 10 configuration. I don't have physical access to the system but I have root access via SSH.
Various tools - lspci, ...
3
votes
1
answer
902
views
Now to manage an LSI 9261-8i in vSphere 4.1, or a good alternative RAID card?
I've been struggling with a new VMware server we recently got. Everything installed fine, but I'm unable to manage the RAID card. The built-in monitoring works (kind of), but I need to manage it, not ...
- 337
2
votes
4
answers
23k
views
Disable hardware RAID controller
I have a storage server with Supermicro X9SCL(+)/X9SCM motherboard and MegaRAID SAS 9240-4i controller. I want to disable RAID to access HDDs directly from OS for further softraid setup.
Motherboard ...
2
votes
4
answers
20k
views
Erasing Server RAID Hard disks (SAS and SATA) for decomissioning
We are in a process of decomissioning a handfull of Fujitsu Primergy Servers. Before of course, we want to make sure that the hard disks are completely wiped out. But it seems there is no way to ...
- 9,031
2
votes
1
answer
6k
views
Xenserver 6.5 LSI MegaRAID
Is there a package available to install the MegaCLI on XenServer6.5? For 6.5 there is this [1] but 6.5 has another kernel. XenServer 6.5 is based on CentOS6.5 (right?), so I also tried the kmod-...
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