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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HP ProLiant ML350 G6: Does the RAID rebuild automatically?

A SAS HDD in our ML350 is faulty. We're buying a new one and I wanted to ask if I can just take out the faulty one and insert the new one with the server on to let it rebuild the raid or any manual ...
Pitto's user avatar
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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 &...
titus's user avatar
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2 answers
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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 ...
titus's user avatar
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1 answer
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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 ...
Guntis's user avatar
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2 votes
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Rebuilding array on 3ware 9690SA-8I

TL;DR version RAID10 array working fine Reboot server as part of maintenance Array inoperable (no access whatsoever) Controller logs say a single drive is bad Remove drive & test - no bad sectors ...
Tim Jones's user avatar
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11 votes
3 answers
51k 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 ...
FrinkTheBrave's user avatar
6 votes
1 answer
6k 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 must ...
Relentim's user avatar
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110 votes
8 answers
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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 our ...
Stu Thompson's user avatar
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5 votes
1 answer
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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 ...
Bigbio2002's user avatar
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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 ...
Prix's user avatar
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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?
Yaw's user avatar
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-5 votes
1 answer
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Dell PowerEdge t710 raid configuration for newbie [closed]

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 ...
user97195's user avatar
1 vote
1 answer
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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.
Nathan O'Sullivan's user avatar
0 votes
4 answers
488 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 II ...
John's user avatar
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1 vote
1 answer
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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 ...
SamK's user avatar
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7 votes
2 answers
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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 ...
Sandra's user avatar
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3 votes
1 answer
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"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. ...
SiegeX's user avatar
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1 vote
1 answer
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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 ...
dloj333's user avatar
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7 votes
2 answers
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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 ...
Matthew Thode's user avatar
1 vote
1 answer
293 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 ...
Payson Welch's user avatar
1 vote
1 answer
2k 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 ...
Pez Cuckow's user avatar
0 votes
1 answer
6k 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 ...
Erik Sjölund's user avatar
9 votes
4 answers
36k 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 ...
Sandra's user avatar
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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 have ...
Erik Sjölund's user avatar
4 votes
3 answers
15k 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 ...
Erik Sjölund's user avatar
9 votes
7 answers
15k views

How long should a RAID Reconfiguration take? (Adaptec 6805)

I'm experimenting with various RAID configurations of a new Adaptec 6805 (not the 'E' model) Attached are 8x Hitachi 5400RPM 2TB SATA 6Gb Drives using the miniSAS to SATA cables provided. I created ...
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0 votes
2 answers
748 views

How to determine the real disk size of an hardware RAID?

I have a Fujitsu Primergy TX200 S3 server running Win Server 2003 R2 SP2. It has hardware-RAID using an LSI Logic MegaRAID SAS 8300XLP RAID Controller. I simply want to find the size of each disk in ...
Rory's user avatar
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2 votes
2 answers
411 views

If performance is not a issue software vs hardware raid

If performance is not a issue what makes hardware raid better then software raid. so far i have drawn the following conclusions. Hardware raid is limited to the raid controller if that pacs up you ...
Ludger's user avatar
  • 182
3 votes
1 answer
904 views

RAID controller question: NVDIMM or not?

I am in the market for a new RAID controller for a Dell server, and I have a choice between "PERC H700 512mb Cache" and "PERC H700 512mb NVDIMM Cache". There is a $200 difference between the 2 cards, ...
Jon Tackabury's user avatar
2 votes
1 answer
453 views

Virtualisation mini-datacenter setup?

We have (gradually) built up a simple network of servers which I intend to use as a virtualisation stack(?). To illustrate the hardware that we have at our disposal please see the following image: As ...
dannymcc's user avatar
  • 2,727
0 votes
2 answers
293 views

installing microsoft server 2008 on RAID drive

Using RAID 1 on a HP G165 G5 server and trying to install windows server 2008, however right at the install screen the windows installation wont find any hard drives. Ive tried installing HP 4/8 ...
eddywebs's user avatar
5 votes
4 answers
7k views

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”. ...
Nate's user avatar
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3 votes
1 answer
6k views

How do I configure hardware raid in a Poweredge 2850?

I just bought a Dell Poweredge 2850 from Craigslist and for the most part I'm happy with it's $300 price-tag, but I cannot figure out where to configure the embedded hardware raid... I've seen online ...
Eric Fossum's user avatar
3 votes
1 answer
1k views

2x SSD's in RAID1 for MySQL server

I'm in need to upgrade my MySQL machine, as currently I am running 2x SATA 7200rpm drives in RAID0. This of course is quite dangerous incase one of the drives fails. As I do not need too much storage ...
Mr.Boon's user avatar
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0 votes
1 answer
266 views

Software RAID to hardware RAID, can it be done?

Can it be done ... well. (For the record, I did not set this server up.) In my server there are 4 disks. 3 of them are in a software RAID5, and 1 has the OS installed. I want to buy a RAID ...
gtaylor85's user avatar
  • 199
0 votes
4 answers
4k views

How to (hardware) RAID 10 on Ubuntu 10.04 LTS with 4 drives and motherboard with RAID contoller

I have 4 500GB hard drives. I set up a RAID 10 in BIOS, much like shown here: http://www.supermicro.com/manuals/other/RAID_SATA_ESB2.pdf Then I followed these instructions: http://www.unrest.ca/...
lollercoaster's user avatar
1 vote
2 answers
545 views

Can I do a Raid 5 with a SAS6i/R?

I have a PowerEdge 2970 server with a: SAS6i/R Integrated Controller for PowerEdge 2950/2970, x6 Backplane http://accessories.dell.com/sna/products/cables/productdetail.aspx?c=ca&l=en&s=corp&...
aron's user avatar
  • 129
0 votes
1 answer
544 views

Windows Server 2008 Core R2 Raid status

I would like to ask if there is a way how to figure out the RAID status on a running W2008SR2 Core machine. I have ICH8R Intel Controller. RaidConfig utility from intel doesnt work just like CMDTool2. ...
Xenik's user avatar
  • 1
3 votes
2 answers
1k views

Replacing a Hard Disk in RAID 5 Array with Newer Version

Recently, 1 out 4 disks in my RAID 5 array failed. I searched for a replacement part and learned that only a newer version of the hard disk is available. This "newer" version has the exact same specs ...
Ari's user avatar
  • 189
3 votes
2 answers
8k views

Replace faulty Dell PERC 5/i controller without losing data

Is it possible to replace a 5/i controller without losing the data on the array? Can I import this as a foreign configuration? Any "gotchas" or tips to make this smoother?
ensnare's user avatar
  • 2,232
2 votes
1 answer
562 views

Slipstreaming Drivers for a PCI Controller Card into Ubuntu Server 10.04 Installation

I'm setting up a backup server with RAID10. The PCI Controller Card is new to the computer so the drivers need to be installed for the OS install to recognize it. I went through this process ...
user29600's user avatar
  • 429
1 vote
1 answer
798 views

Fiberchannel SAN RAID is slow (DS4100)

I have set up two DS4100 SAN linked with fiberchannel. I've set up multiple RAID configurations: RAID10 spanning 4 disks in each SAN, a few RAID5's. (hardware RAID handled by DS4100) I'm running 32-...
Tedd Hansen's user avatar
3 votes
1 answer
358 views

Set device offset in Linux due to failed hardware RAID?

I have a failed hardware RAID card. This card had two drives in a RAID-1 mirror. Plugging one of the drives into the motherboard shows no partition table. Using a program like testdisk, I can see ...
Aaron C. de Bruyn's user avatar
1 vote
1 answer
856 views

HP ProLiant DL 180 G5 - Can't see disks

I'm currently learning how to manage the storage of a HP proliant dl 180 g5. It has a Smart Array P400 RAID controller which works fine. So I've actually the problem, that I can't see disks which are ...
Wiegand's user avatar
  • 13
1 vote
1 answer
349 views

Windows Software Raid 0 over hardware raid 1 does this equal a hybrid 1+0?

I've got a server running windows 2008R2. The hardware controller can only do Raid 1 or 0 and it's hotswappable. I have 4 drives (hot swappable hardware), each pair is mirrored (raid 1). I'd like to ...
Visha's user avatar
  • 11
2 votes
3 answers
281 views

Which RAID5 configuration is faster?

I have RAID controller with 24 SATA disks. Which configuration is faster? One RAID5 with all disks. Six RAIDs with 4 disks in each group.
d_pilot's user avatar
  • 323
1 vote
3 answers
495 views

Drive configuration for small virtualization

I do IT infrastructure support primarily for small businesses (up to ~50 users). The past few years I have been doing some server virtualization for situations that don't require a second physical ...
user78940's user avatar
  • 473
0 votes
2 answers
874 views

How do I get Busybox Linux/ESXi 4U1 to recognized expanded RAID 5 disk array?

I'm in the process of upgrading a pair of physical servers to 3 virtual machines. The 2 physical boxes (HP DL380 G5 with Smart Array P400 disk controller) will run VMware ESXi 4 update 1. Each ...
Peter's user avatar
  • 218
7 votes
6 answers
16k views

Poor read performance on Dell Perc H200 RAID10 with (4) 1TB 7200rpm 64MB drives

I am seeing only 50MB/s reads: ensnare@box:~$ sudo hdparm -tT /dev/sda [sudo] password for ensnare: /dev/sda: Timing cached reads: 4592 MB in 2.00 seconds = 2296.48 MB/sec Timing buffered disk ...
ensnare's user avatar
  • 2,232
0 votes
1 answer
3k views

Raid1, one disk displaying SMART errors:

I have a HP Pavillion machine, and I'm using the RAID controller built into the motherboard (H-RS880-uATX, some consumer grade RAID controller, not sure who). I got a slew of event log errors from ...
Mattley's user avatar
  • 103