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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92 views

Reconfigure from Raid0 to Raid1, is it possible?

currently I have Fujitsu tx140 s1p servers, one Tower and one Rack. They are both running with the same hardware, configures the same way, so I'll just ask one Q for both. They have an motherboard ...
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1answer
85 views

Solaris not seeing FC volume

We recently replaced a failed controller in an AL connected RAID. I wasn't the one that replaced the controller, but apparently when the new controller was installed something weird happened with the ...
0
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0answers
106 views

Trouble resizing LVM volume after expanding Areca 1280 RAID 6

My problem is very similar to Trouble resizing LVM volume after expanding Areca 1220 RAID 5 array; however, my 2 LVs are created on a unpartitioned raid volume: # pvdisplay --- Physical volume --- ...
0
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3answers
1k views

Convert RAID 5 to RAID 10 without data loss

I have a Windows SBS 2011 server on a Dell R610 with RAID 5 configuration [3 disk]. Is there a way to convert it to RAID 10[4 or 6 disk] without losing anything or needing to re-install the whole OS ...
1
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1answer
1k views

HP SmartArray P212 disabled, cache module not attached

I have a DL180 G6 server with Smart Array P212 RAID controller. The server runs under Ubuntu. After an upgrade from Ubuntu 10.04 to 12.04 utility hpacucli (ver. 8.50-6.0) stopped working. The error ...
1
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1answer
884 views

How to get HDD parameters from SCSI controller

The SCSI controller we are using is IBM RAID M1015 and a SATA 3 HDD is attached to it. Now the question, is there any way to get the HDD specific parameters like HDD Model number/Manufacturer, Storage ...
1
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1answer
539 views

Adaptec RAID array was not detected after updating the kernel?

Continue from this topic, the newer kernel booted successfully but it doesn't see my sdc - which is a hardware RAID array (level 10). I'm sure the aacraid module is loaded: # grep aacraid ...
2
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2answers
314 views

RAID 10 — how do you know a drive is going or is bad?

I have some servers with a datacenter all the servers have RAID 10 setup. How do I know when one of the drives is going bad or is bad and needs to be replaced? EDIT: These servers are unmnaaged and ...
3
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3answers
1k views

Extend RAID 1 (HP SmartArray P410i) running Linux

I took over a fairly simple server setup with the following RAID 1 config running Ubuntu 11.10 (Kernel 3.0.0-12-server x86_64): => ctrl all show config Smart Array P410i in Slot 0 (Embedded) ...
0
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1answer
161 views

Can I recover data from a RAID5 after accidental changed of disk order? [closed]

An intern yesterday accidentally changed the disk order, now we get there error, "Following containers have missing required members and cannot be configured. Container #0 RAID-5" Then no boot device ...
1
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0answers
482 views

Linux CLI program to verify/control nVidia hardware RAID?

I have a server with a Supermicro motherboard that has an nVidia RAID controller on board. When I boot up, I can hit F10 and see/modify the RAID settings. However, I don't want to reboot this server ...
0
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1answer
641 views

RAID: replacing a disk before it fails

We have a RAID 5 setup (Megaraid SAS ROMB) with 4 930 Gb physical disks running as a 2.7 TB VD. Recently (a few months back) we had a drive fail and had to leave it in degraded mode for ages (various ...
0
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2answers
163 views

RAID config for write heavy postgresql 9.2 database with four disks

I have a server with 32GB ram, one intel E3-1245 and four 15k SAS disks with a BB LSI MegaRaid controller. I wan't the optimal performance for my server, which will be pretty write heavy at times, and ...
0
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1answer
1k views

Checking Hard Disk Health on HP P410 RAID Card

How can I regularly check health of HDDs on a HP DL180 with P410 RAID Card on a live system? hpacucli is installed, however, could not see any options for this feature. Using CentOS, 64-bit. Thanks ...
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1answer
387 views

Raid 0+1 vs raid 1 and disk span in windows server 2012 [duplicate]

What is the difference between hardware raid 0+1 and 2 or more RAID 0 with disk span? what are the differences: advantages and disadvantages?
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1answer
1k views

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 ...
0
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2answers
301 views

Raid 1 and Latency

I am aware that RAID comes with certain write penalties, etc and that varies at different levels. I am trying to figure out how latency is affected in RAID 1. From my SAN, I can look at the number of ...
0
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2answers
909 views

move raid hard drives between different servers, preserving data [duplicate]

Possible Duplicate: Move raided hard drives between identical servers, preserving data I'm a server beginner working with a Sun x4600 and an IBM x3650. In the event that one of them dies, I ...
0
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1answer
229 views

Move raided hard drives between identical servers, preserving data

I have a raid array of hard drives in a Sun x4600 that need to be moved out, and another Sun x4600 ready to accept those hard drives. The problem is: in my limited experience with servers, it seems ...
4
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2answers
606 views

Write caching in linux

I have read a lot on serverfault and searched on google about write caching, but still cant find the answer. I have an HP ProLiant DL380 G5 with HW raid with 512 MB Battery backed cache. I use debian ...
0
votes
1answer
285 views

LSI 2208 9286-8e MegaRAID controller beeping when connected to 24-bay NexentaSTOR JBOD enclosure

I am getting beeping from the LSI external RAID controller even if I properly shutdown and there is no array re-initialization. Would I be required to use a battery back (BBU) with the LSI controller ...
5
votes
1answer
139 views

what harm can writeback caching have on a degraded disk array?

At work I administer several machines using (real) hardware raid controllers (with battery backed write caches), and these have the nasty habit of falling back to writethrough behaviour when an array ...
2
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1answer
572 views

Online resize logicaldrive on Smart Array P410i

On my HP Proliant server I have hot added 2 extra drives. To expand the current raid 1 array I used the following commands: hpacucli ctrl slot=0 logicaldrive 1 modify raid=1+0 hpacucli ctrl slot=0 ld ...
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1answer
210 views

Two raid controllers in one HP ML350 G4 server

Here's the situation: I have running HP Proliant ML 350 G4 server, which already has Adaptec AAC-RAID controller and 2 HDD built as Raid-1. Now, I want to add another 2 HDD but for them I have another ...
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2answers
2k views

Can a PERC H700 controller card recognize the full capacity of 4TB drives?

For example if I go to create a new virtual disk in Dell OpenManage Server will it see the full capacity of the physical drive? I know it's supposed to be able to use a full 3TB drive but I can not ...
0
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1answer
224 views

Dell Perc 6i raid5 array: replace drives and expand VD?

I have a Dell T300 with a Perc 6i, to which 3 500Gb drives are connected. The are assembled into a raid 5 ~1000Gb VD. This setup is working fine, however system is filling up and I would like to ...
1
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3answers
8k views

How to replace failed drive in RAID 5 array in HP DL380 G4 server

Sorry for not providing more information when I previously posted this question. More detail is provided below. Any feedback would be welcome. I have a HP DL380 G4 2U server which has 6 drive scsi ...
2
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3answers
155 views

Will a raid cache be better for performance than hard drive cache speeds?

In a device that has raid 5, and a "raid cache" of 4GB, does this help performance? I have 32MB cache hard drives but I was wanting to know if the 4GB cache will make up for the difference in ...
3
votes
1answer
949 views

Rebuilding RAID 10 array with two failed drives

I have dedicated server with 4 HDD in hardware RAID 10 configuration and It worked fine until yesterday, when It started to crash randomly on couple minutes. I’ve contacted my data center and they’ve ...
3
votes
1answer
653 views

moving raid 10 to another identical server both on Smart Array 6i controllers

I have dead HP DL 380G4 with RAID 1+0 with 1 logical volume from 4x72GB drives on built-in Smart Array 6i 128Mb BBWC. It was shut down properly. It seems it was usual death for Proliant with ILO led ...
2
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1answer
710 views

RAID 1 configuration does not show after installation

I used the HP Smart Array Configuration utility to setup a RAID 1 array (hardware P400 controller) using four disks. I created 2 logical drives with physical hard drive 2 mirroring drive 1 (o/s ...
0
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2answers
116 views

New harddisc in RAID fails after only a few days

Last weekend I had to replace one harddisc in a RAID 1 on a PERC/5i controller because it reported it as failed. After replacing the disc it worked for 5 days and then the controller started ...
1
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1answer
301 views

internal RAID (on PCIe 3.0) versus external Thunderbolt RAID like Pegasus R6

I want to build up a new server-config in a small SOHO environment for some virtual machines (VmWare Workstation), like Firewall/VPN or Win8-WS for external access, etc. Some VM’s will be heavily ...
1
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0answers
203 views

Possible bad raid card / hard disks (LSI 9261-8i)

I am in a bit of bad spot at the moment, i have a dedicated server hosted by someone else, it has a LSI 9261-8i raid card installed, attached is: 3x300GB SAS 15K rpm disks (in RAID5) 5x2TB SATA ...
3
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1answer
341 views

Manually recovering a RAID5 array, how to approach?

Basic situation: I'm looking to manually reconstruct a RAID5 array for which the controller has lost the configuration. To complicate matters, the volume is encrypted with full disk encryption (to ...
0
votes
1answer
1k views

Configure raid for IBM x3200 M2

I have a x3200 server and I have planing to use raid 1 for mirroring Sata Hardisk . I am searching on google to find raid server manager for x3200 , but no luck . Is there another way to configure ...
1
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1answer
183 views

RAID 50 24Port Fast Writes Slow Reads - Ubuntu

What is going on here?! I am baffled. serveradmin@FILESERVER:/Volumes/MercuryInternal/test$ sudo dd if=/dev/zero of=/Volumes/MercuryInternal/test/test.fs bs=4096k count=10000 10000+0 records in ...
1
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1answer
59 views

Ordering new Virtualization Hosts - Do I need a Raid controller if my storage is shared?

I am planning to order some new servers. It crossed my mind that I can reduce my costs a bit if I do not order a raid controller. The logic behind, is that my storage is on a shared storage server, ...
2
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0answers
397 views

linux hardware raid 10 / lvm / virtual machine partition alignment and filesystem optimization

I've been reading everything I can find about partition alignment and filesystem optimization (ext4 and xfs) but still don't know enough to be confident in setting up my current configuration. My ...
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4answers
9k views

How to check HDD health in Linux

I am facing issue with my HDD and I need to know what is the command or application to check the Health of the HDD in LINUX REDHAT
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2answers
222 views

Is it okay to shut down Adaptec 5085 / MSA60 raid for 5 hours?

Adaptec Raid 5085 with no battery (on the raid card) 6 MSA60s Raid 10 Big APC UPS with low load Our building power needs to go out for 5 hours. Is it okay to shut down the raid ...
1
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0answers
195 views

Can I use tw_cli migrate to grow a RAID10 unit where the drives for that unit were each replaced one by one with larger drives?

Can I use tw_cli migrate to grow a RAID10 unit where the drives for that unit were each replaced one by one with larger drives? (And the array was rebuilt after each replacement operation.) I am ...
0
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1answer
168 views

Do I need to rebuild the array after putting in a new hot spare?

So my experience with RAID is minimal. So I figured I'd come and ask here. We have a 16 drive RAID system that have 15 drives in RAID 5 with a hot spare left over. Recently one of the drives in the ...
21
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4answers
1k views

Do raid controllers syncronize HDD platter rotation?

I'm in the market for a new storage solution. While researching various specs one of my coworkers said that some raid controllers can synchronize HDD rotation to the effect of all drives' sector/block ...
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1answer
217 views

Poweredge R710 configuring RAID 10 with one disk missing

I have ordered Poweredge R710 server with 4 diskas planning to configure them as RAID10. However I only got 3 disks delivered (4th will be delivered in 10 days). I am wondering can I create RAID10 ...
2
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2answers
69 views

RAID Controller Link Speed

I was wondering what sequential speed should I expect from a RAID controller that has 1 x MiniSAS 6Gbps port. In the product details -> Data Transfer Rates: Up to 6Gb/s per port Does this MiniSAS ...
5
votes
2answers
2k views

LSI 9260-8i w/ 6 256gb SSDs - RAID 5, 6, 10, or bad idea overall?

We're provisioning a new production server for our reasonably busy website. Our choice of host have available a 6 drive configuration with a LSI 9260-8i card. My initial thought was to fill all six ...
0
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1answer
185 views

Maxed out disk space on RAID10. Thoughts on moving forward?

I have (4) 146GB HDD set to a RAID10 on one server. I have now run out of disk space and I would like to increase it, however, I do not have any available slots to install more HDD's and no available ...
1
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1answer
177 views

sqlserver 2005 sp3 poor performance and scheduled job failing

When executing the Microsoft SQL Server 2005 best practices analyzer, I am getting some reported as follow: The Outdated system driver [C:\WINDOWS\system32\ntoskrnl.exe] of System that can cause ...
3
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2answers
403 views

Adaptec 2405 “Knight Rider” LEDs - fault?

I have an Adaptec 2405 installed on ESXi 5.0. When the card is idle, it flashes the red LEDs back and forth, Knight Rider -style, just like this video. Is this normal, or is this a fault? I have dug ...