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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-6
votes
2answers
168 views

replacing 3 drives out of 8 in a server [closed]

We have a Dell R510 server running SQL 2008 R2 with 8 x 300GB drives running Raid 5. We (just noticed) we had three bad drives with blinking lights so we powered down the server and replaced them ...
1
vote
3answers
60 views

Would the data on the RAID Card Cache and Drive Cache be lost when a kernel panic happens?

Is a BBU necessary when you have A+B power? Would the data on the RAID Card Cache and Drive Cache be lost when a kernel panic happens and you are forced to do a cold reset?
3
votes
1answer
43 views

When does a Raid restore redundancy after a broken sector is flagged as defective?

What happens when I flag a sector on a hdd in a RAID setup as `defective (GLIST) ? Will the data be written to the replacement sector right away or does this depend on the actual setup/settings ...
0
votes
0answers
50 views

Sata RAID5 Orphan Drive

so today, one of our hadware RAID5-controllers (Sil3124 (r5), 4x 2TB) went into degraded / legacy mode without any notifications. Additionally, automatically rebuilding the raid-group failed: Event ...
4
votes
1answer
111 views

Partition alignment on MegaRAID RAID 1 with 4k sector (advanced format) drives

I want to setup RAID 1 (mirroring) on a LSI MegaRAID SAS 8708EM2 (1078 chipset) with 4k sector (advanced format) drives. To the best of my knowlegde the controller does not officially support 4k ...
6
votes
1answer
276 views

How do you connect more than 4 drives to a LSI 9361-4i MegaRAID controller?

I’m fairly new to proper hardware RAID having only used it in pre-built server machines before, but on the recommendation of some friends who work for datacentres I’ve bought an LSI 9361-4i MegaRAID ...
0
votes
0answers
47 views

omreport doesn't report faulty disk

I have a Redhat 4 running on a Dell Poweredge R310, with 2 1TB disks in RAID 0 (my OS sees it as a single big 2TB disk). One of the disks is starting to fail. I plan using the OMSA tools to monitor ...
3
votes
3answers
849 views

Samsung 840 Pro SSDs in a Dell R720

We have a MySQL database server running on an Dell PowerEdge R720 (PERC H710 Mini RAID controller) ( (Ubuntu 12.04). We're considering upgrading the 2 x 146GB 15k SAS drives to Samsung 840 Pro SSDs. ...
0
votes
0answers
53 views

2 x mSata Raid0 seems fine, Intel rapid storage doesn't show, reports error

I've searched but couldn't find anything related. I've got a MSI GT60 2oc, Win7 x64 laptop that supports a twin mSata raid0, which after a bunch of hijinks, inc replacing the twin mSata caddy, I seem ...
6
votes
1answer
268 views

Replace HP Smart Array E200i without losing data

I've got a Smart Array 200i which seems to have some bad slots (slot 3 and slot 5). It doesn't matter what HD I put in these slots, it keeps telling me the drive is bad. My question is two-fold: Is ...
0
votes
1answer
117 views

Mac Pro says RAID degraded but all drives showing green status

OSX 10.9 - RAID Utility says RAID array is degraded but all drives are showing green All started after error log Drive 3:5000c5004e189ddf missing - Previous drive status was inuse Now getting ...
0
votes
1answer
68 views

3ware raid controller does not get a proper reset signal after a reboot

I have a linux server that has a 3ware controller 9650SE-4LPML connected. Today, I migrated this server with all its disks and raid controller to a new motherboard + cpu + ram (gpu is also changed). ...
0
votes
2answers
82 views

1 x Raid card and 6 sata drive over 1 SFF-8087 port [closed]

I have a question regarding LSI00328 LSI MegaRAID SAS 9271-4i Can I connect 6x sata drives to -4i card or I need -8i version
1
vote
1answer
71 views

Extract data from server without causing high disk IO

My current diagnosis is that there is a hardware fault, either related to the memory of the hardware RAID controller or something related to the extra juice the hard drives requires when running on ...
0
votes
1answer
181 views

Bandwidth with SAS expanders and RAID controllers

Having a RAID controller that has eight internal SATA3 lanes, you can get 6 Gb/s on all eight drives. What if I connect a 24 port SAS expander to an eight port RAID controller, do I still get max ...
0
votes
1answer
28 views

Merge two sas card into one

I have one existing raid card (9240-8i)with 8 sas hdd, but i want to add 8 more hdd with another raid card (same model), but i wan to merge with existing raid and add it as expansion, can it be done? ...
0
votes
1answer
288 views

Windows Server 2012 and recognizing RAIDed SSDs as an SSD

Problem: Because defragmenting is detrimental to SSDs and decreases their performance/lifespan, its important that modern OS's use TRIM instead of defragmentation. If an SSD is incorrectly recognized ...
1
vote
3answers
852 views

What is the difference between a HBA card and a RAID card?

I thought I knew the difference between HBA and RAID. In my mind, HBA is offloading from the main motherboard/CPU and is simply JBOD... usually has an external SAS ports, whilst a RAID card does the ...
0
votes
2answers
61 views

Wiping hard drives in an IBM DS3512

I have an IBM DS3512 RAID storage device, which I'm planning to sell. How would I reliably wipe my data off of all the hard drives? As far as I can tell, it abstracts away all direct access to the ...
16
votes
8answers
8k views

RAID-5: Two disks failed simultaneously?

We have a Dell PowerEdge T410 server running CentOS, with a RAID-5 array containing 5 Seagate Barracuda 3 TB SATA disks. Yesterday the system crashed (I don't know how exactly and I don't have any ...
0
votes
2answers
543 views

How to monitor RAID1 system with Dell PERC H200 controller?

I have a server configured with RAID1 using a Dell PERC H200 controller. I tried to use smartmontools to monitor the disks. But after installing it and running the command, it says SMART support is ...
0
votes
1answer
31 views

Converting Non-Raid to Raid

I have a server that currently has one 1TB drive in it. I just bought a 1TB drive to put in Raid-1 with it. The server already has data on it, so my question is what do I have to do to make it a raid ...
1
vote
1answer
127 views

If you use Intel Rapid Storage for RAID1 on Linux server, how would you know 1 SSD is failing?

I use the motherboard's RAID1 to mirror the 2 SSD, in Linux server it see only 1 'Intel Volume1,' in times where 1 SSD fail how would I know? Thanks.
0
votes
1answer
40 views

Is it possible to install OS during RAID scrubbing?

One of our servers crashed a few days ago. I had to recreate the RAID container with the remaining disks. Currently the system is running the scrubbing process (screenshot below). I would like to know ...
1
vote
1answer
83 views

How to copy RAID 1 HDDs from one server to another Identical server

I have one IBM X3100M4, type 2582 windows server and having 2 x 500 GB HDDs in RAID Copy. Now brought new server and having blank HDDs. How can I copy RAID HDDs from Old server to new server? I have ...
1
vote
1answer
280 views

HP Proliant G7 hardware RAID configuration automation with ribcl

I have been trying to automate hardware RAID configuration of HP proliant machines before OS installation (So I can not use hpacucli) ssh into iLO3 doesn't have option for RAID configuration I use ...
1
vote
3answers
91 views

4 Disk - RAID(5) - 1 alleged faulty drive

I have a OWC Mercury Pro Elite Qx2. I have 4 4TB Hitachi drives setup on a RAID 5. One day, the red light came on indicating that my C drive has failed. I took it out, and put it on my docking ...
5
votes
5answers
1k views

RAID level confusion (MegaCli vs megasasctl output)

I'm utterly new to working with LSI MegaRAID controllers and I'm confused as to what RAID level I am actually running. My server is equipped with 4 disks, 4TB each and I would like to have them ...
0
votes
2answers
79 views

Transfer from RAID-1 to RAID-0 — easy as cloning?

I have a RAID-1 of 1TB drives using on-board RAID. I have 2 new 240GB SSDs I want to place in RAID-0. This is Windows Server 2012. I know with disk cloning/transferring that it is important going ...
4
votes
1answer
521 views

How to update SSD Firmware on RAID Controllers

Got some servers with RAID Controllers and SSD. Raid Controller: LSI MegaRaid 9271-4i SSD: Intel 520 The MegaRaid controllers have the ability to update drive firmware using MegaCLI. Intel for ...
0
votes
2answers
4k views

What is the performance implication of hardware vs software RAID in 2-disk RAID0/RAID1 setup?

I am choosing between two similar models of servers, one of which has software RAID, while the other hardware one. Servers in question are SYS-E32-1 and SYS-E32-3 from So you Start (an OVH brand) and ...
2
votes
1answer
256 views

Large write with dd fail on RAID-5

I have a server with a RAID controller which connects to a JBOD over SAS. JBOD is populated with 16 SAS-HDDs of 3TB (8 of one make and 8 of other, same rpm). I have configured 3 logical drives with ...
0
votes
2answers
42 views

Migrate unix-system to hardware RAID-5 possible?

At the moment, I have a Intel SR2500 with 5 disks running at home. 4 of the disks aren't used at the moment due to maintenance-reasons. Because it's an expeiment-laboratory-machine where I can try ...
2
votes
2answers
171 views

Email notifications about hardware RAID status

I have a server with HP Smart Array hardware RAID controller. To monitor its status, I use cpqarrayd. /etc/default/cpqarrayd contains DAEMON_OPTS="-t localhost:162" to send SNMP traps when something ...
2
votes
2answers
9k views

How to monitor the hard disk status behind Dell PERC H710 Raid Controller with CentOS 6?

I have a Dell server running CentOS 6 using PERC H710 Raid Controller card with Raid 5 setup and I want to monitor the hard disk failure/working status behind the Raid Controller. Then I should be ...
1
vote
1answer
1k views

LSI MegaRAID SAS 9261-8i: Disk isn't recognized after replacement

I've got a Supermicro Server with an LSI MegaRAID SAS 9261-8i Raid Controller inside. There were 3 Disks attached to the controller which were configured as RAID5 array. One of the disks failed ...
0
votes
0answers
117 views

(Re)building a RAID1 on a IBM M1015 SAS/SATA controller

I have setup a server (Intel S5500BC) with two pairs of HDs (2 x 130 GB SATA and 2 x 2 TB SAS) on an IBM M1015 SAS/SATA RAID controller. I wanted to configure them as two RAID1 arrays. Unfortunately ...
0
votes
0answers
75 views

Intel Rapid Storage card seems to be holding my drives hostage under windows 2003

I have 6 drives connected to this controller in a Gigabyte ga-P55-ud4p motherboard, that until recently were a working SW raid under windows 2003. Someone decided to make an image of the machine ...
0
votes
0answers
594 views

Event Id 129 - SOURCE= hpcisss2

I have an HP ProLiant ML 350 G5, which has an HP Smart Array E200i/128 BBWC Controller embedded. This controller manages two arrays (each with three 72 GB disks in RAID 5) This controller has ...
1
vote
1answer
411 views

Correct VHDX sector size in Hyper-V enviroment for a RAID array

What is the correct sector size (which available in Powershell as options, when creating a new vhdx) for RAID10 array with default stripe size? I am using LSI 9271-4i controller and 4x Seagate ...
0
votes
1answer
1k views

Grub install failing on Hardware RAID with LVM

I have a SuperMicro box with an Areca RAID controller installed. The RAID controller is configured for RAID 6 + Hot Spare. I am attempting to install Ubuntu 12.04 LTS. I set up LVM with separate ...
1
vote
0answers
324 views

running commands on physical drives on different backplane with megacli

So when I run "MegaCli64 -PDlist -aALL -NoLog | egrep 'Slot|state|Inquiry|Enclosure'" to grab a list of disks and their status. I can see a total of 36 disks. The issue is that they have the same slot ...
1
vote
1answer
381 views

Areca ARC 1261ML only sees 2TB on 4TB Disks

I recently acquired a Supermicro Box with a Areca ARC 1261 ML. I have installed 16 X Seagate ST4000VN000-1H4168 (4TB Drives). The ARC 1261ML controller only sees 2TB of usable space on the 4TB drive. ...
1
vote
3answers
978 views

Replacing 2 disks (raid 1) to a larger pair under a 3ware controller in linux

I have a 3ware 9650se with 2x 2TB disks in raid-1 topology. I recently replaced the disks with 2 larger (3TB) ones, one by one. The whole migration went smoothly. The problem I have now is, I don't ...
0
votes
0answers
111 views

RAID5, unknown filesystem and disk failure

I have an Ubuntu 12.04 machine with 3 disks in RAID5, and the RAID controller is on the motherboard. After almost a year of flawless use, it seems that one disk had a failure. Every time I restarted ...
1
vote
0answers
79 views

Scientific Linux: RAID5 unaccessible after netboot by mistake

A server running old scientific linux 6.0 suffered damage from an enabled netboot during reboot by trying to load some crap from an application server in the same subnet (I saw him stuck somewhere in ...
2
votes
4answers
2k views

LSI RAID: Write cache policy affects read performance?

I have a server with a LSI MegaRAID SAS 9260-4i controller, RAID-5 with 3 x 2 TB disks. I did some performance testing (with iozone3) and the numbers show clearly that the write cache policy affects ...
-1
votes
1answer
123 views

How to test is hardware ssd-cache work?

We have server with hardware raid controller (Adaptec ASR71605Q). It has 10 sas HDD, 2 SSD for cache and 1gb onboard cache ram. On server installed ESXi. On ESXi I'm start Linux, create 2Tb disk for ...
6
votes
2answers
2k views

Why are “sectors per track” still relevant on a modern OS with modern drives?

I am building out a new machine and the raid controller is asking me for sectors per track. I haven't had to deal with disk math in a long time (1998?), and I can't find anything that pertains to ...
-4
votes
1answer
135 views

raid 1 always degraded after pushing reset [closed]

I have Marvell hardware raid 1. After pushing reset or any other incorrect shutdown raid is degraded. Is it possible to create hardware raid 1 on other chips(intel chipset for example) for example ...