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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.

701 questions
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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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mirroing hard drives of different sizes

I have a dell server with two 18 gig drives in a Raid 1 config. I want to replace the drives with 400 gig drives. If I break the mirror and then remove one of the 18g drives, insert a 400g and create the mirror, then do the same process again with…
PBK
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1 answer

HDD Failure in RAID, but scans fine?

I had an HDD failure in my Linux RAID (Flashing red light). I pulled it out and on reboot I was forced to run fsck manually and repair some errors in the remaining filesystem. I was trying to find out some extra info on why it failed and plugged it…
Alan
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1 answer

How to live migrate Raid 6 to Raid 10 - and add hard drives in the process - using MegaCli

I have a new server, that has 6 SATA HDs with 1TB each. I am using a Hardware Raid 01:00.0 RAID bus controller: LSI Logic / Symbios Logic LSI MegaSAS 9260 (rev 03) The server came preconfigured with RAID 6 only using 3 Harddrives. Now I would like…
ChrisZZ
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5 answers

Growing a hardware RAID-1 array

I'd like some advice from anyone who might already posess the experience that I'm about to gain. We're about to upgrade the RAID-1 array in our POP server with some larger disks. The system itself is about 6 years old (I was the one to build it…
Ernie
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1 answer

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
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Does 3ware 9550SX SATA RAID controller work with WD 2TB caviar black edition drives?

I have 4-years old 3ware 9550SX SATA RAID and i want to upgrade drives to 2TB. Official LSI HCL says that they support only enterprise-level disks and the latest HCL speaks only about 1TB drives. Does anyone have some experience with 3ware 9550SX…
Vitaly
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1 answer

Areca RAID controller, always runs check after reboot

In the machine where I keep the backups for when a datacenter burns down I have an older Areca RAID controller (ARC-1231ML). For some reason, it always runs a check on all volumes directly after reboot, My one suspicion is that this is triggered…
Simon Richter
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1 answer

Raid-Controller Solution on ML350p G8

Next Week, I will get an ML350 G8. So far so good. (And also two MSA 60) But now I'm irritated, by all the things I read, about the raid situation. With my actuall homeserver, an ML370 G6, has an P410i, which I upgraded yesterday, just for checking…
AN602
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What causes PERC H310 disk to go into foreign state?

I mean in general. Could the disk itself be bad. Did someone fat finger a dd command or something and wipe out the partition table?
Timothy Pulliam
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2 answers

How does hardware RAID report problems?

I have built software RAID once in the past (CentOS 7 and mdadm) and I know I was able to configure it to send an email when a disk fails. Now I need to deal with an old server (about 10 years old) and it has hardware RAID. I configured it through…
Pavel Tankov
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Attaching new drives to raid adapter

I'm new to raid configurations, did only software raids until now. There is a server with a raid adapter that can have 4 drives attached to it. Currently it has 2 hdd, each with 1 TB. From the OS (CentOS 6) I see this raid as one sda1, side note…
obeliksz
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Does connecting SATA drives to multiple SAS ports make a difference in throughput?

I have four 2 TB SATA II drives that I intend to connect to an LSI 8888ELP card. The card has two Mini SAS ports, and I am going to connect the drives with an SFF 8087 to 4x SATA breakout cable. But the part I am confused on is the specs of the card…
WaxTrax
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Hardware raid on Intel D865GLC

Is there a way to to setup hardware raid 1 or 5 on an Intel D865GLC motherboard using ATA/IDE drives? I am aware of various Linux software raid solutions but I would like to try Hardware raid. There seems o be a few sata raid drivers for this board…
lanrat
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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 > /sys/block/sdb/queue/scheduler echo 20 >…
titus
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