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1answer
2k views

Unable to access intel fake RAID 1 array in Fedora 14 after reboot

1st I am relatively new to linux (but not to *nix). I have 4 disks assembled in the following intel ahci bios fake raid arrays: 2x320GB RAID1 - used for operating systems md126 2x1TB RAID1 - used for ...
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1answer
38 views

Deleting RAID 1 array with OS on it and switching to AHCI mode? Without losing data?

I am trying to break my RAID 1 array (using onboard intel raid controller) that has Windows 8.1 installed on it. I then want to switch my bios to AHCI mode and boot from one of those drives. Is it as ...
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2answers
2k views

Does the PERC H310 Raid Controller support hard drives above 2 TB (e.g. 3 TB)?

We received a new machine (Dell Precision T3600) with a PERC H310 Raid Controller. Due to some troubles during the installation I started to read a bit about that Raid Card, and I found some sources, ...
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0answers
13 views

3ware RAID controller kicked out two drives from unit after replacing another degraded drive

One of our servers had a degraded drive and after replacing it, two other drives were shown as "NOT PRESENT" in the web interface. The whole RAID unit is now inoperable and I'm not sure how to re-add ...
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1answer
1k views

How can I achieve maximum sustained sequential disk write performance?

I need data write rates of ~1 GB/sec sustained for ~1 hour. Data is coming in over this PCIe x4 frame grabber. I need to stream its full bandwidth to disk. I don't have experience with RAID, but as ...
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1answer
70 views

Cloning HDDs from a hardware RAID array?

Is it possible to clone the individual disks of a hardware RAID to get a copy of the contained array? I have an Adaptec RAID controller. I put it offline, attached the RAID member HDDs to a regular ...
0
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1answer
160 views

poor write performance with RAID 5 array

I have an Intel RS2WC080 RAID controller card connected to an array of 8 WD Black 4TB SATA3 drives, in a RAID5 configuration. While the read speed is ~750MB/s the write speed hovers around 45MB/s. I ...
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1answer
40 views

Will Diskpart Clean All reduce HDD lifespan?

I am planning to reinstall Windows on my PC and I just want everything to be as fresh and new like when it is first used. I thought about doing a Clean All on my hard disk, but I have one question: ...
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1answer
232 views

Laptop offers RAID option - how does that work?

I am in the market for a new laptop. I'm looking at the Dell M6800 and HP ZBook 17. Both of these laptops can be configured with a RAID 0/1/5 option. Is this hardware RAID or software RAID? I have ...
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2answers
176 views

Broken motherboard hardware mirror - getting data from the hdd or from its image

I got a computer (Windows 2003 server) with broken motherboard. The board using an onboard hardware raid and have 2 HDDs in mirror configuration. Trying to find a replacement board will take some ...
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1answer
35 views

OCZ Vertex 4 64 GB timeouts on Areca 1880IX-16-4G

I use 3x OCZ Vertex 4 64 GB in RAID5. If they work then it's all ok, but suddenly random drives are dropped from array with timeout errors. Sometimes even two of them which causes filesystem errors. ...
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1answer
864 views

Dell PERC H710P Raid Control reduced I/O speeds when idle

I have a Dell PERC H710P Raid Controller card and 4 Dell Certified 600GB Solid State Drives configured in RAID-10. I have a Dell Poweredge R820. After performing benchmark tests using ATTO, I usually ...
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2answers
249 views

Adaptec Raid Controller 6405E slower than onboard raid?

Running on Windows 8.1 x64. Raid is 0 on two Samsung Evo SSD. Both read and write cache is enabled. Here's result from onboard raid (ASUS-P9X79-E-WS): And here's from the dedicated raid controller ...
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0answers
38 views

RAID array failure. False positive?

Background: I have 3 storage units in my PC: an SSD that contains my operating systems a 1TB hard-drive that is about 5 - 6 years old a 1TB hard-drive that is only a few months old The 2 big ...
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1answer
113 views

On-board RAID vs Hardware RAID

They technically are both "hardware" raids, but what really sets the two apart? Wouldn't on-board raid basically be a software raid since they share the same processor.
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0answers
71 views

LSI Megaraid controller won't work in an Asus Sabertooth X79 board

It worked fine on my old X58 board but that one lost it's main controller. The BIOS comes up normally and shows the array, strangely BEFORE the POST screen rather than after like it used to. Device ...
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2answers
72 views

What card i need to attach SATA drives to server

I have IBM System x3650 M2 and it has only SAS drives attached It has 7 PCI-e empty slots. I want to know what type of card i need which i can put in PCI-E so that i can join 2 SATA drives of higher ...
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1answer
74 views

Hardware RAID vs. Software RAID [duplicate]

What is the big difference between software RAID and hardware RAID at the low level? What is really going on that sets the two apart? As far as I know, the only difference is the RAID card can have ...
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3answers
124 views

Is hardware RAID worth it? [closed]

I am planning to build a home NAS server, and have managed to get my hands on the following- Core i3 3220 Ivy Bridge CPU 4 GB Kingston RAM Basic motherboard with dual gigabit LAN port 4x WD 3TB HDDS ...
0
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2answers
64 views

SAS and SATA together in a RAID

I have to build a new server with SAS drives for RAID 10. However, I have 2TBs of storage on 2x1TB SATA drives. Would it be possible to still plugin 2 SATA drives even if I run a hardware raid 10 ...
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1answer
382 views

Disk durability when using RAID 10 vs RAID 5

Most of the time technical articles about different RAID levels mostly about how redundant they are, how fast on read/write etc. But I can't find information about would a disk in a certain RAID live ...
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0answers
2k views

SDcard /dev/sdb2 is apparently in use by the system; will not make a filesystem here

I divided my sdcard into 2 partitions, but It got an error and couldn't create a new partition. Error: /dev/sdb2 is apparently in use by the system; will not make a filesystem here! My ...
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1answer
138 views

Debian/3ware 9500 - RAID Failure?

I swapped the hard disks from my home server into a new case last night (new mobo/CPU/RAM) and transferred its 3ware 9500 PCI-X SATA RAID card with it. The machine has 4 disks configured in 2 RAID1s - ...
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2answers
2k views

How do I set up hardware RAID?

This might seem like a stupid question, but the last rig I put together was an 800 MHz single core computer. I decided to put together a fileserver based on the Asus p8z77-I deluxe motherboard. I ...
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2answers
6k views

RAID10 with MegaRAID WebBIOS

I'm trying to create two RAID10 arrays using LSI MegaRAID's WebBIOS utility. If I understand correctly, I must create many two-disk RAID1 pairs called "disk groups" and then span those disk groups ...
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0answers
41 views

Progressive upgrade of a RAID array

Our group has a 16 disk backup RAID6 array. Currently, those 16 disks have the following specs; 500 GB 16 and 64MB cache 3 Gb/s SATA I would like to begin upgrading these disks if possible, ...
0
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1answer
209 views

Adaptec 6405e SATA raid controller + 4x WD Red 1TB .. no Raid 5 option?

I'm in the ACU/adaptec bios utility. All four drives are initialized. I go to Create an Array, select all four drives. It only gives me Raid 1/10/1EE options - but no RAID 5. What am I doing ...
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0answers
40 views

Want simple RAID capable direct attached storage device that abstracts the RAID config

I am looking for a device for my mother for redundant storage of her photos. Local (non-cloud) based is a requirement. I would prepare the device for her in a RAID 1+0 (at least 4 drives, striped no ...
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2answers
3k views

Hardware or Software RAID and Filesystem Type?

I'm looking to build a pretty simple RAID-5 or RAID-6 array and I'm looking into my options. The machine will be a 64bit Ubuntu Linux Server and will essentially be used as a backup/file server. I'll ...
0
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2answers
6k views

Set up raid 1 after OS installation

I bought 2 Lenovo thinkstation E31 and I want to set up RAID 1 on them. I added a hard drive for each. I went in the BIOS and set it to RAID then I pressed ctrl-l to start the raid manager but it ...
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2answers
86 views

two computers with united CPU and memory resources?

is it possible?:) it wold be interesting, when given cheap chineese netbook and cheap chineese tablet, setup for example ubuntu to both of them, then le wild magic happens and viola - we have one ...
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3answers
213 views

Is it possible to create a RAID 1 array for ubuntu and install xp on a non-RAID part of the drive?

I was wondering if it is possible to setup a hardware RAID 1 array on 2x1TB drives for the installation of Ubuntu 12.04 whilst leaving some space free outside of the RAID array to install Windows XP ...
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0answers
186 views

RAID-0 bottlenecking when reading and writing simultaneously?

I have 4 Samsung 840 Pro SSDs running in hardware RAID on an Intel RS2BL080 LSI RAID card. My read and write times are incredible: $ dd bs=1M count=10000 if=/dev/zero of=test.img conv=fdatasync ...
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0answers
230 views

TRIM support on Intel RS2BL080 Hardware RAID card?

I've got an Intel RS2BL080 hardware RAID card and I'd like to know if it supports TRIM on my RAID-0 array of SSDs. I've heard that the Intel 7 series integrated RAID solutions that ship with ...
0
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1answer
140 views

Adding a drive to a hardware RAID-0 array

I'm building a RAID-0 array as my main boot "drive" and was wondering how adding disks to the array works in implementation. I'll be using either the Intel RT3WB080 or the Intel RS2BL080, which are ...
0
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1answer
129 views

What are the main differences between Intel RAID cards?

I'm in the market for a RAID card and really like Intel hardware. I'm looking to build two separate arrays: One RAID-5 array consisting of at least 3-4 2TB 7200RPM hard disks. One RAID-0 array ...
0
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2answers
6k views

How to check if hardware raid is working fine without pull HDD out and resetting?

I think the title says it all but here are some details: I have a hardware RAID setup. Machine is AMD 6core with MSI 890FXA motherboard. I have two hard drives of 1TB each with hard ware RAID1 ...
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0answers
132 views

Disk utilization 100%, no read or write

Our disks on one of our servers are showing 100% utilization but no read or write. here is the output of iostat -xc 1 and errors on syslog https://gist.github.com/4110533 status info from raid card ...
1
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1answer
118 views

Is it possible to migrate a boot RAID volume from an older motherboard to a newer one? [duplicate]

Possible Duplicate: Raid 0 - what happens with the data when hdds plugged into another motherboard Background info I am going to upgrade my current setup from an X58 to an X79 and I have 2 ...
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2answers
2k views

How to setup RAID 5 - Windows Home Server

I am planning to install Windows Home Server 2011 on my new mini server. I have 3 x 2TB hard drives and another hard drive for the OS. I can't find any tutorials on how set up RAID 5 on Windows Home ...
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1answer
908 views

Prevent Windows 2003 blue screen upon boot after changing to RAID?

Here's what's happening. I havent been using hardware RAID on my motherboard, but since I got new disks today I changed from normal SATA to RAID and rebooted. I set up the RAID, three disks, one of ...
3
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1answer
372 views

move RAID controller + HDDs + data (RAID5) to new motherboard

I have a HighPoint RocketRAID 2300 RAID controller with 4 HDDs on my MSI P6N SLI mainboard and want to move the RAID controller with its HDDs and data to my new computer that has a Asrock H61M-ITX ...
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1answer
548 views

Should I use Windows write cache if I have RAID controller + BBU?

I have ARECA ARC-1231ML 2 GB Cache and RAID 0 with 4 A-data 30 GB SSD drives and sometimes Windows is checking filesystem during boot. I think the problem is that my system is using RAM as write ...
1
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1answer
156 views

Hardware RAID 1 With ERC/TLER/CCTL

I am aware of the problem when using standard consumer-grade drives with RAID levels 5 and 6; if a drive takes too long trying to read and/or repair a bad sector, it will be dropped by a hardware RAID ...
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2answers
380 views

How many RAID controllers do I need?

I need to make a 50TB RAID array. Now I'm confused! I didn't found any RAID controller that have more than 8 channels (So supports 8 drives (?)). So how can I make an array of 25x2TB drives? Do I need ...
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0answers
708 views

Computer hangs at boot screen with new RAID card

I am trying to build a new server around a Biostar TH61 motherboard and an Adaptec 6405E RAID controller card. The machine booted fine from USB before the RAID card and drives were installed. After ...
1
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1answer
397 views

Add a small RAID card? Will it help overall stability and performance of my nine hard drives?

Will I get any extra genuine added performance and RAID stability if I insert a basic RAID card into a PCI-E x1 slot? I am considering the Adaptec 1220SA - 2 port SATA, PCI-express (1x), RAID 0/1. ...
1
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1answer
145 views

JBOD and DUAL mode difference

My dual bay HDD enclosure got JBOD and DUAL modes among other modes. What is the difference between those 2 modes? I just want to know exactly because I am connectin a single hdd with data and I don't ...
0
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2answers
874 views

Why RAID controllers so expensive? [duplicate]

Possible Duplicate: Why are hardware RAID solutions relatively expensive? Well, this maybe a very stupid question. Shouldn't RAID controllers be very simple? Compare RAID controller with ...
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1answer
361 views

SSD Vertex 3 RAID 0 performance over time

I want to set up 2x vertex 3 240gb in a raid0. Will performance degrade over time? Is there a solution? OS agnostic please - if the hardware supports something a driver can be written.