RAID, an acronym originally for Redundant Array of Inexpensive Disks (today usually interpreted as referred to as Redundant Array of Independent Disks), is a technology that provides increased storage performance and reliability through redundancy by spreading data across multiple disks using various algorithms (RAID-levels). RAID can be implemented in hardware storage controllers, or in software, usually as operating system/kernel features.
Questions tagged [raid]
3655 questions
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Dell Workstation Raid: Software or Hardware?
Looking at getting some Dell Workstations (T3500). One of the options is to raid 1 the harddrives (presumably this would give you a speed boost). Is this software or hardware raid?
jimconstable
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Hardware RAID controller set to 256kB stripe size, but XFS to 4k block size
Is this configuration ok?
I've read that the stripe size should match the block size. I am mostly storing 8-30GB single files that are read sequentially. What should I adjust, and how? Ubuntu doesn't let me create a block size greater than 4k. …
ensnare
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Perc 5/i and 3TB drives?
Any way to get a Dell Perc 5/i controller to recognize 3TB drives?
ensnare
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Linux software RAID that uses system RAM for write cache
Is it possible to configure software RAID 5 on linux that uses system RAM for write cache? I have a file server with 8GB of RAM ... would be really cool if I could dedicate 4GB to write cache. If so, how is this done? Thanks.
ensnare
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for ZFS: passthru, I-T mode on LSI 9260-8i?
LSI 9260-8i firmware version 2.0x
the controller menu does only have RAID: 0, 5, & 6
Solaris ZFS requires passthrough or Initiator-target mode to get direct access to disks.....how to get that accomplished?
does it need a firmware upgrade..? any…
JMS77
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MacOS X iSCSI Initiator MPIO or LACP Support
I am trying to find a MacOS X iSCSI Initiator with MPIO or LACP Support to use on MacOS X Server 10.5. We've been looking at ATTO's, but it doesn't MPIO nor LACP.
tegbains
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How do I replace hard drives in a Dell PowerEdge 1950
My Dell PowerEdge 1950 has 2x 3.5inch 146Gb SAS attached to a PERC 5/I Raid controller card in a raid1 configuration.
I want to replace these with 2x 2TB SATA drives which the Dell documentation says the Server can accept.
My questions are:
Can I…
ShaneH
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HP ProLiant server - multiple raid controllers?
We just got a brand new HP DL370 G6 server with 14 X 146 gb and 2 X 300 gb sas drives.
Inside we got 3 raid controllers (one HP DL370, one HP P410 and one HP P812).
It has 2 disk bays and each of them is full. There are 4 cables that come out of…
George
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HP SmartArray P400 has slow read and write speed
I have desktop in which I installed HP SmartArray P400 controller with two HP DF0146B8052 hard drives. I made RAID0 logical volume from them, but I am getting 20MB/s write speed and ~140-120MB/s read speed. Also there is quite low scatter for…
Tadas Šubonis
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Seagate Cheetah Size
I just got some replacement drives for a server here, went to pop one in, and it turns out that the 72Gig for a Seagate is slightly below the 72gig of the Maxtors that we currently have.
Does anyone know if there is anything hidden on the drive…
mjallday
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Use the exact same type of disk in a RAID, or different manufacturer/batches
What rule do you follow when buying disks for RAID arrays:
to buy the disk as similar as possible?
to buy the disks from different manufacturers?
Some people chose the same type for performance and compatibility reasons. Some chose different…
Mircea Vutcovici
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Best way to part disks in Linux? (raid, partition or LVM)
There are a few ways to part disks in Linux: raid, partition, and the LVM. How to choose?
We have a server with 10+ disks. Some data in our system is temporary and we wish to use RAID 0 on them. Some are important so we use RAID 1. Of course there…
X.M.
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How to remove RAID 1 (soft)?
I have been told that my dedicated server (which I use for hosting my websites) has RAID 1 (software), which makes my two disks of 750gb each, act as one, which is good for both speed and instant backup (in case one of them explodes or…
HappyDeveloper
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Is it safe to have disks in RAID mode on a server?
I have 3 servers at 100tb.com that uses Softlayer's datacenter.
Two of them are in RAID 1. At least two of them have been working continuously for over a year, and they have high amounts of data written at the disk, all day long. So, the disks work…
valter
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Dell H700 Nagios warning problem
I've use nagios plugin check_dell_omreport.pl. Everything worked fine until recently. Now there is a problem, and I would like to consult. Perhaps someone could help.
The problem is that Dell was added Vendor Lock for RAID controllers, not certified…
Evgeniy
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