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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2
votes
2answers
727 views

RAID 5 with hot spare or RAID 6 for Production System running two virtual Servers

We are buying a dual hex core ibm x3650 with 64 GB RAM and 7x300 GB HDD. This server is hosting two virtual servers, web server and database server. I am using Double take high availability to ...
2
votes
1answer
155 views

Replace a 3.5" hard drive in a RAID 5 array with an SSD?

With a 3ware 9650SE on Debian 6, can I replace a drive in a RAID 5 array with an SSD? The goal would be to eventually replace each 3.5" hard drive in the array with SSDs. Is there anything I should ...
0
votes
1answer
462 views

Move OS from Software RAID (PERC S300) to Hardware RAID (PERC H700/H800)

A client of ours has a server running Windows that is installed on a PERC S300 software RAID. We want to upgrade this to a larger capacity, so we are also upgrading to a hardware RAID card (PERC ...
2
votes
3answers
291 views

Alternative RAID Controller to an Adaptec 3805 [closed]

Our server room has a HP DL180 G5 with 8 disks (RAID 6) and a flakey Adaptec 3805 RAID controller. I want to replace this controller as I don't trust it (See my first post for more details if you want ...
1
vote
2answers
234 views

Horrible performing RAID

I have a small GlusterFS Cluster with two storage servers providing a replicated volume. Each server has 2 SAS disks for the OS and logs and 22 SATA disks for the actual data striped together as a ...
0
votes
1answer
244 views

raid5 configuration on new dell server, sbs, win2008r2

Looking for a bit guidance configuring hardware raid on a new dell t610, I am basically trying to install Hyper-vR2 as the parent OS, then I will run SBS11 and WIin2008R2 virtually on top of that. ...
3
votes
2answers
2k views

Monitor LSI 3ware raid controller on ESXi

This concerns a server that runs ESXi (v. 4.x or 5.x) installed on drives that are configured into a raid10 using an LSI 3ware 97050 raid controller. I would like to know if there is a way to monitor ...
2
votes
3answers
1k views

Raid-5 Performance per spindle scaling

So I am stuck in a corner, I have a storage project that is limited to 24 spindles, and requires heavy random Write (the corresponding read side is purely sequential). Needs every bit of space on my ...
1
vote
0answers
708 views

Slow disk transfer rate

I have problem with slow disk transfer rate. It's static files server for our website. I was making backup of data and noticed that tar is very slow. So I did hdparm -t and... hdparm -t /dev/sda3 ...
23
votes
3answers
9k views

Linux - real-world hardware RAID controller tuning (scsi and cciss)

Most of the Linux systems I manage feature hardware RAID controllers (mostly HP Smart Array). They're all running RHEL or CentOS. I'm looking for real-world tunables to help optimize performance for ...
2
votes
2answers
2k views

MegaRaid damaging disk by set a drive to “Offline”?

I wanted to test performance in a RAID10 with a "damaged drive". To simulate this situation I've set a single drive to "Offline" by using this command: MegaCli -PDOffline -PhysDrv [45:12] -aAll The ...
3
votes
3answers
7k views

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 ...
3
votes
1answer
983 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 ...
1
vote
2answers
4k views

HP StorageWorks MSA60 SAS attached enclosure: how to manage online on Windows?

We have a HP StorageWorks MSA60 SAS attached enclosure, with 12x1Tb SATA disks, connected to a P800 controller. Until now, they were used with a Linux server under the control of an external company. ...
5
votes
2answers
1k views

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 ...
2
votes
0answers
617 views

does somebody know whether a linux / opensource driver does exist for the apple xserve 3,1 raid controller?

I'm trying to install linux on a apple xserve 3,1 which comes with some strange raid controller that does not get detected by linux. lspci is telling me: 01:00.0 RAID bus controller: Apple Computer ...
5
votes
4answers
1k views

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 ...
0
votes
1answer
480 views

3ware Raid Migration 9650SE

I'm trying to migrate a single disk on a 9650SE 4LPML to a RAID 1. I'm trying to use 3dm2 to accomplish this, but the only options it will allow me to migrate to is either RAID 0 or RAID 10. I only ...
0
votes
2answers
566 views

Hot swapping a dead drive with hardware raid on linux

I have a server with 4 SATA hot-swappable drives and a 3Ware 9650SE-4LPML hardware RAID controller. The server runs Ubuntu 10.04.3 LTS and I use tw_cli to control the RAID array. So, a disk died and ...
3
votes
1answer
992 views

Can I mix SAS and SATA2 drives on one controller?

I've read here that I can't mix SAS and SATA2 drives on the same controller - is that really true? I understand I shouldn't mix on the same channel, but the same card!? For example, when I plug my ...
4
votes
1answer
622 views

Areca RAID volume and LVM alignment

I have the following hardware: 1x - Areca ARC-1680IX-24 PCIe x8 SAS RAID Card 24x - Seagate Barracuda LP 2 TB 5900RPM SATA 3 GB/s 32 MB Cache 3.5-Inch Internal Hard Drive ST32000542AS I plan on ...
2
votes
1answer
1k views

How to disable mdadm when running hardware RAID

My server Dell R210 runs a Debian squeeze with hardware RAID1 (H200) preconfigured. But I notice that there is mdadm running. Sometimes in backup, or in OS upgrade (to Debian 6.0.4), I have messages ...
-1
votes
3answers
721 views

which raid controller is better, Intel Z68 MotherBoard buildin or Dell PERC5i? [closed]

I have two options to implement raid5 in the server, 6 SATA 2T disks is expected. option1: New Motherboard using Intel Z68 chipset, support 6 SATA disks total and raid 0,1,5 etc. option2: Used Dell ...
0
votes
2answers
3k views

Configure RAID for IBM X3630 X3

How can I setup a RAID for IBM X3630 X3 server with IBM ServeRAID M5015 disk drives? Is there a tool to configure disk drives? I'm using Windows Server 2008 R2
1
vote
1answer
292 views

Connecting 8 x 500GB SATA drives to HP Smart Array P800 controller on 2 external mini ports

I have already 8 drives hooked up the the P800 RAID controller internally. I would like to attach 8 more SATA drives externally. I looked in the documentation but the only thing mentioned for the ...
0
votes
1answer
513 views

What are some tips for cheap and solid hw raid controller card for running ESXi? [closed]

ESXi is great product, however little bit picky about hardware. Can you please reccommend me some hardware raid controllers which work 100% out of the box and are also price-efficient ? I know about ...
1
vote
2answers
460 views

Is HP p212 raid controller supported on Ubuntu 8.04 server LTS?

sorry for my simple question, however I can't find any useful resources on the internet. Except the official HP page about my p212 here. From this I understand that HP doesn't support Ubuntu 8.04. But ...
0
votes
1answer
153 views

Tweaks for 3ware raid

Does applying these tweaks to the sdb raid harm any data that is already on the array? echo 64 > /sys/block/sdb/queue/max_sectors_kb echo 512 > /sys/block/sdb/queue/nr_requests echo deadline ...
0
votes
2answers
402 views

raid5 samba upload write slows down

I have Samba installed on a server, that has 8 2TB HDDs in raid5, os is debian 2.6.32, 64bit. When I copy a 3.5GB file to the server, the first GB is transferred with about 100MB/s, but afterwards the ...
0
votes
1answer
75 views

mssql replication storage

I have 2 boxes. One is dell (4x146GB 15k 3.5'' SAS in raid 10). this is primary sql server (runs only mssql). dell has 8gb ram and mssql is running fine. Dell has windows 2008 R2 x64 second is hp ...
8
votes
3answers
23k views

HP ACU CLI Examples

Has anyone used the HP Array Configuration Utility Command Line Interface (hpacucli.exe) to get physical disk information into a file? I'm not at the machine right now, but basically I want to find ...
6
votes
1answer
2k views

I have a 21TB array but only 16TB is visible from Windows

CONTROLLER Raid Controller: 3Ware 9650SE-24M8 Disks: 21 x 1TB RAID5 Stripe 64KB WINDOWS OS: Windows Server 2003 SP2 32x Disk: Dynamic 19557.44GB Volume: Capacity 15832.19GB I guess my array ...
71
votes
8answers
7k views

How can a single disk in a hardware SATA RAID-10 array bring the entire array to a screeching halt?

Prelude: I'm a code-monkey that's increasingly taken on SysAdmin duties for my small company. My code is our product, and increasingly we provide the same app as SaaS. About 18 months ago I moved ...
2
votes
1answer
3k views

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 ...
0
votes
1answer
143 views

RAID 1 with motherboard software or SiI hardware?

I have to setup 2 servers with RAID 1 and the company cannot provide funds for the hardware needed until december, here is the hardware available: Computer A OS: CentOS 6.0 MB: EP41-UD3L RAM: 4GB ...
1
vote
1answer
569 views

Data recovery on HP ProLiant ML350 G5 on RAID 1

The motherboard in the server in question is dead. How can I recover the data on the RAID 1 drives?
-4
votes
1answer
698 views

Dell PowerEdge t710 raid configuration for newbie

My company bought a Dell PowerEdge t710 server with: 48 GB ram 4x4 GB ethernet ports. RAID 5 for PERC H700 4 x 1TB, SATA, 3.5-in, 7.2K RPM Hard Drive (Hot Plug) My job is to configure Hyper-V ...
1
vote
1answer
820 views

What's the difference between Adaptec's “maxCache” and “Hybrid RAID” technologies?

http://www.adaptec.com/en-us/_common/maxcache/ http://www.adaptec.com/en-us/_common/hybrid-raid/ They sound similar, but there's no detailed description of how either of them work.
0
votes
4answers
338 views

What RAID Level Should Be Used

I am working on a server build project for work and have inherited the following items that I need to figure out the best way to handle and configure. 2 of these: I/O Crest SY-PEX40008 PCI-e SATA ...
1
vote
1answer
166 views

HP StorageWorks RAID 50: Volume size on creation is not precise enough

I've got a HP MSA2312i with 24 Hard drives. I created a RAID 50 virtual disk. That makes me a total of 11 TB of available space. I want to create a 500GB volume (0.5 TB). When I want to create a ...
6
votes
2answers
4k views

How long should rebuilding 250GB take? [closed]

In a PowerEdge 1900 have I a hardware RAID 5 of 5x250GB disks + 1 hot spare 250GB. Disk 2 have errors, so I forced it offline in the raid bios to replace it. Now it have been rebuilding to the hot ...
3
votes
1answer
276 views

“Transparent” SATA RAID Controllers [closed]

I'm looking for a true hardware SATA RAID controller that can do levels 0, 1, and 5 and is, for a lack of a better term, "transparent" to the OS in that it requires no software drivers whatsoever. ...
1
vote
1answer
1k views

HP Smart Array p410i rebuild percentage not correctly working

I have a HP Poliant with a p410i and when I rebuild my raid 5 with a quick remove and insert to test the rebuild percentage goes up to 10% and then jumps to 92%. I continues up to 100% and the Array ...
6
votes
2answers
715 views

Areca - expanding a raid by swapping out disks for larger ones

What I am looking to do is, one by one, replace the drives in my current raid array (in a 1680i). After the drives are replaced by their larger counterparts, I want to do an online expand of the ...
1
vote
1answer
212 views

Perc 4 Configuration - Drives not showing up

Hello I am trying to configure raid on a PERC 4 running in a PowerEdge 1850. When I go into the bios configuration for the raid controller the drives I have attached are not present. Specifically ...
1
vote
1answer
1k views

Hard Drive (Failure) IBM x336, Diagnose and Fix RAID-1 & Configure IBM Software

A year ago I was given an old IBM x336 server to run some personal projects on, now I knew nothing about servers at all so just put some more RAM in, wiped and disks and installed Ubuntu Server on it ...
0
votes
1answer
3k views

how do I configure the archttp software for email notifications from an Areca 1880i RAID card

I have a 64-bit CentOS 6.0 Linux computer with an Areca 1880i RAID card. The RAID card has its own ethernet port but it is right now not connected to anything. Instead of using that ethernet port for ...
5
votes
4answers
10k views

Is this a critical RAID error?

If I do the following /opt/MegaRAID/MegaCli/MegaCli -LDInfo -Lall -aAll -NoLog > /tmp/tmp /opt/MegaRAID/MegaCli/MegaCli -LDPDInfo -aAll -NoLog >> /tmp/tmp then I see these errors ...
0
votes
1answer
3k views

how to do a kickstart installation of CentOS 6.0 on a Areca 1880i hardware RAID card

I have a server with this hardware two Intel Xeon E5620 CPUs Areca 1880i 8-port SAS RAID PCIe 512MB cache Areca Battery Backup Module 5 pcs Hitachi Deskstar 7K3000 HDS723030ALA640 64MB 3TB and ...
2
votes
1answer
5k views

Areca 1880i RAID card doesn't initialize: “Waiting for F/W to become ready”

During a kickstart installation (Centos 6.0) of a server having this hardware: Areca 1880i 8-port SAS RAID PCIe 512MB cache Areca Battery Backup Module 6 Hitachi Deskstar 7K3000 HDS723030ALA640 64MB ...