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1answer
90 views

How can I reduce LSI raid array without data loss

I have a server with 8x SAS drives attached to hardware LSI RAID controller (MegaCli64) and all 8 drives are configured as single RAID 10 array. I now want to remove 2 drives and replace them with ...
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1answer
143 views

MegaCli Using write through instead of write back

My DB server is a dell r710 with megacli. Recently was getting poor performance from the database and stumbled across that the current cache policy is WT but the default cache policy is WB. # ...
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1answer
164 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 ...
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163 views

megaraid drives are failing to add and giving invalid parameters error

I am trying to add a couple of RAID 5 arrays to my second adapter. Adapter 0 is two disks in a raid 1 which is running the OS. This seems to be working fine. Attempting to add the second array gives ...
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1answer
30 views

Is it possible to use megacli to copy from one partition to another?

Except "dd" and "rsync", is it possible to directly use the megacli command to copy one partition to another? I am using h310 raid controller, and it seems not working well using "dd" or "rsync", ...
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1answer
265 views

How to properly use the the MegaCli command for a LSI Megaraid Secure erase for an SSD?

I tried the following commands but I keep getting a invalid command error. It seems to properly pick up the correct controller, drive slot, and adapter though. I currently don't have a screenshot of ...
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0answers
88 views

How to monitor CacheCade with MegaCli?

I configured the following virtual device for CacheCade: # MegaCli -LDInfo -L1 -aALL Adapter 0 -- Virtual Drive Information: CacheCade Virtual Drive: 1 (Target Id: 1) Virtual Drive Type : ...
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0answers
324 views

Dell PERC 6 - virtual drive goes offline because a drive went into the “ready” state

I have a Dell PowerEdge 2950 with four drives, and this raid controller (Dell Perc 6/i): lspci -nn RAID bus controller [0104]: LSI Logic / Symbios Logic MegaRAID SAS 1078 [1000:0060] (rev 04) ...
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5answers
1k views

RAID level confusion (MegaCli vs megasasctl output)

I'm utterly new to working with LSI MegaRAID controllers and I'm confused as to what RAID level I am actually running. My server is equipped with 4 disks, 4TB each and I would like to have them ...
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1answer
1k views

LSI MegaRAID SAS 9261-8i: Disk isn't recognized after replacement

I've got a Supermicro Server with an LSI MegaRAID SAS 9261-8i Raid Controller inside. There were 3 Disks attached to the controller which were configured as RAID5 array. One of the disks failed ...
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0answers
327 views

running commands on physical drives on different backplane with megacli

So when I run "MegaCli64 -PDlist -aALL -NoLog | egrep 'Slot|state|Inquiry|Enclosure'" to grab a list of disks and their status. I can see a total of 36 disks. The issue is that they have the same slot ...
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1answer
536 views

MegaCli64 -PDInfo shows drive but other commands says device does not exist

A drive recently went missing on our IBM server. It has happened on other servers in the past and I usually just replace them with out a problem. On one it is not automatically adding the new drive. ...
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2answers
471 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 = ...
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1answer
217 views

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 ...
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1answer
200 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 ...
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1answer
1k 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 ...
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0answers
290 views

Expand Raid 10 set on MegaRAID LSI 9261-8i

I have an existing Raid 10 drive with 8 drives. 4 in each span. I can't figure out how to expand the set by adding two more drives, one to each span. I'm using the MegaCLI command line tool. I ...
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0answers
2k 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" ...
3
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1answer
2k views

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 ...
0
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1answer
579 views

Enabling Temperature Support on LSI MegaRaid Cards

I've got two IBM ServeRAID M5014 SAS/SATA Controller cards in two different machines. One reports drive temperatures, the other does not. I am hopping that it is some type of megacli option that I can ...
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0answers
90 views

Detecting a newly configured raid array without restarting

So, I created a 4-drive raid10 array on an LSI card (9285-8e) via megacli: # megacli -CfgSpanAdd -R10 -Array0 [252:4,252:5] -Array1 [252:6,252:7] -a1 This completed fine, and I see the device in ...
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1answer
850 views

MegaRAID - changing cache policy online

I would like to perform some tests with WriteThrough and WriteBack. Is it safe to change these settings on a production system? The RAID controller doesn't have a BBU so I would like to enable ...
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0answers
224 views

MegaCli refuses to configure new disk

A drive went bad on one of my nodes (actually 3 went bad, but there was no problem replacing the first one). following replacement of the drive, [root@ MegaCli]# ./MegaCli64 -PDList -aALL | egrep ...
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1answer
1k views

MegaCLI causes drive “Other Error”

I am having an issue where running "megalci -PDList -aAll" will cause an Other Error to be logged for 2 of the 6 discs in a pair of servers I have. Here is that again in more detail. I have two ...
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1answer
2k views

Bad Blocks Exist in Virtual Device PERC H700 Integrated

I have a DELL server with PERC H700 Integrated controller. I've made RAID5 with 12 harddrives and the virtual device is in Optimal state, but I receive such errors under linux: sd 0:2:0:0: [sda] ...
3
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1answer
215 views

Added drive to PERC6/i raid5 array instead of replacing - is there a way to fix this?

This is a 3 drive RAID5. The disk in slot 1 failed. After the disk was replaced, I ran: MegaCli64 -LDRecon -Start -r5 -Add -PhysDrv[32:1] -L0 -a0 Obviously that was not the correct command as now ...
1
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1answer
294 views

MegaCli newly created disk doesn't appear under /dev/sdX

After having successfully added 2 new disks in a new RAID virtual drive (background initialization done), I would have exepected it to appear under /dev/sdh but it's not there (so, unusable). The ...
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1answer
340 views

megacli64.exe manual

Is there any document that explains the command line switches of megacli better than the cryptic output of megacli64 -h ? The machine is an IBM x3650 m3 to which I added three more disks.
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2answers
554 views

How to I know hard disk members of any Virtual Disk LSI RAID with MEgaRaid

i get a machine with a LSI MEgarad card. I know what Virtual Diska has: Adapter: 0 Product Name: LSI MegaRAID SAS 9260-4i Memory: 512MB BBU: Absent Serial No: SV11807006 ...
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3answers
5k views

How to interpret this output from MegaCli?

/opt/MegaCli -CfgDsply -a0 | less RAID Level : Primary-1, Secondary-3, RAID Level Qualifier-0 Almost positive this is not running a RAID3, my guess is a RAID 10, where "Primary" means ...
3
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1answer
841 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 ...