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Questions tagged [hardware-raid]

RAID solution with hardware assistance. RAID parity calculations can be performed by either the main CPU, or by a separate processor on the RAID controller card.

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What are the good ways to migrate a RAID array to bigger disks?

I'm looking to replace my hard-drives with bigger-ones and I would like to know what are the best practices in doing this. I have a HP ProLiant with its 256MB version of RAID controller: 03:00.0 RAID bus controller: Hewlett-Packard Company Smart…
Zlatko
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PERC 6/i | ext4 | raid5 | 4 disks - improve write performance

I am running several fileservers using this controller, filesystem and disk setup. All of them are suffering from poor write performance, once the 256MB BBU Write Cache is full i get really high iowait (>40) and the write speed goes down to a few…
Niko S P
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IBM ServeRAID: how to use email alerts?

I just installed a brand old IBM server with a ServeRAID 4Lx card. I installed the driver, and the ServeRAID manager software v9.30. Everyting works as expected. My problem is: Yesterday, when not-so-randomly clicking here and there, I saw an email…
Gregory MOUSSAT
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What Read Ahead setting on a RAID controller should be used for various workloads?

We have Dell servers running Windows with Perc 5/E, 6/i, 6/iR, etc. controllers. Each controller has 256MB of cache and a battery, so I turned on Write Back on the controller and turned off caching on the physical disks, for performance and data…
Bigbio2002
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Is it normal for a SAS drive to have a few bad blocks, or should I replace my drive ASAP?

I have a drive—part of a RAID 1 mirror—that has two bad blocks. Adaptec Storage Manger e-mailed me when it detected the blocks. It shows 4 medium errors for that drive, but state is still “optimal”. This is my first time using Adaptec RAID…
Nate
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Server with 3 Disk, what's the best HD Configuration?

I Have an HP Server with a quad core Opteron and 3 Disk 250Gb S-ATA Disk, i'm thinking about what's the best configuration of the disk for performance and reliability. There is mainly 2 scenario : -RAID 5 with these 3 HD (on the the array 100GB…
aleroot
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RAID supercapacitor only card (to replace BBU maintenance free)

An excellent article here: https://www.servethehome.com/raid-controller-batteries-time-bombs-you-need-to-replace/ Are RAID controller lithium-ion batteries ticking time bombs within your server? Over this past weekend, we saw an IBM ServeRAID…
morleyc
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Finding SMART status of SATA disks in HP SmartArray

I'm trying to find SMART params of the disks in my array, it seems that simple way does not work: % smartctl -d sat --all /dev/sg0 -H smartctl 6.6 2016-05-31 r4324 [x86_64-linux-4.9.0-8-amd64] (local build) Copyright (C) 2002-16, Bruce Allen,…
LetMeSOThat4U
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Horrible IO speed in Hyper V machine compared to host

I have HP G6 Hyper V host with 6 cores, 24 gb ram, and a p410i raid controller (with 512mb ram and backup battery) running windows 2016 (updated today). When copying data from a SSD (not in raid array) to another P410i Raid 1 managed drive in the…
JensB
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Recover RAID 1 data without controller

Nearly 10 years ago I built a PC for a friend and thought it would be a good idea to use the motherboard's RAID controller to set up a RAID 1 array. Since HDDs have a propensity to die quicker than a motherboard and most people upgrade their…
Craig
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Failed Dell PowerEdge T410: Move Hardware RAID PERC H700: 3 x 300GB SAS (1 faulty) to 2nd T410 for Disk Cloning & Boot

Failed Dell PowerEdge T410: Move Hardware RAID PERC H700: 3 x 300GB SAS (1 faulty) to 2nd T410 for Disk Cloning & Boot FYI - PRE QUESTION CONTEXT: We barely got the original T410 up once where it was flagging CMOS battery errors, which we changed…
Alex S
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HP Code 341 "Physical Drive State: Predictive failure. This physical drive is predicted to fail soon."

this is my first post so bear with me here :-) Background: I have a RAID5 setup with 4 disks that have been working perfect for years. After one drive failed, I installed new drives which where rebuilding but it will mark new drives as smart status…
Magnus Eriksson
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Install CentOS 7 on HP dl120 gen9 server with b140i raid controller

I'm trying to install CentOS 7 on a HP DL120 gen 9 server with a b140i controller. I have 4 1TB HDD setup in a raid 1+0 and the CentOS installer doesn't seem to recognize the logical drive created from the storage utility. From my understanding i…
Bogdan-Stefan Cernat
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What are the pros & cons of 4xSSD(512Gig) in a RAID10 vs. 2xSSD(1Tb) no RAID?

Lots of read and write operations that my current setup of 4xSAS15k drives in RAID10 is having made me think of a new fast storage. My server is busy with a demanding database, lots of pages, php files and images. So I'm considering going the SSD…
CamSpy
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Finding out which cciss disk is what /dev/sdX disk (smartmontools & cciss raid controller)

I have a HP server, which has a hardware RAID array (that mostly isn't being used for raiding, the disks are just passed through to the Linux OS). I have 6 SSD disks. 2 are riad mirrored together by the array, the other 4 are exposed to the OS. One…
Amandasaurus
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