-1
votes
2answers
65 views

Options for SATA ports on motherboard for Files server [closed]

I am planning to build a big file server. (Windows or FreeNAS). I need at lease 300T of space. what options do I have to RAID all disks together? I mean on physical level what kind of connection ...
0
votes
3answers
197 views

Does software RAID-0 really improve performance?

I am going to lease a server and I have two options, SATA or SSD, I decided to save the money and go for the SATA option. But I do not need all that storage they are giving me! So I thought MAYBE I ...
3
votes
1answer
820 views

scsi and ata entries for same hard drive under /dev/disk/by-id

I am trying to set up a ZFS pool using 4 bare drives which I have attached to my Ubuntu system via a SATA hot swap backplane. These are Hitachi SATA drives. When I list the contents of ...
0
votes
1answer
258 views

Mount dell perc (megaraid) partitions on linux box without hardware raid

I have sata hard disk extracted from Dell server with perc 5i. I need to save data on another linux box, without hardware raid. Is it possible? How? I know there are two partitions on this disk, but ...
4
votes
1answer
237 views

Same hard drive problems in dmesg on several servers

We have a couple of these SuperMicro MicroCloud units. In total we've got 16 servers (2x8) which all randomly spew these messages in dmesg: [4661350.802707] ata2.00: failed command: WRITE FPDMA ...
12
votes
1answer
160 views

ssd firmware, linux: updating large batch of drives

I was recently hit with a fatal firmware bug that affected dozens of Crucial SSDs deployed in my datacenter. Many of the affected machines use LSI or other proprietary SAS controllers, which Crucial's ...
7
votes
3answers
3k views

Deciphering continuing mpt2sas syslog messages

Summary I have been getting these cryptic messages in syslog since I installed some new hardware and I can't figure out what the problem is, if it's serious, or what to do about it. They're from the ...
0
votes
0answers
658 views

ata: failed command: WRITE FPDMA QUEUED / hard resetting link

I'm getting a ton of errors like the following during a raid rebuild after replacing a harddisk. SMART values of the new disk look perfectly fine. Are the errors likely to be caused by a faulty disk, ...
0
votes
1answer
342 views

unable to recover data from failed hdd [closed]

my hdd failing (or maybe totally dead) i've connected the hdd via USB but it doesn't appear in fdisk Disk /dev/sda: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders, total ...
3
votes
1answer
413 views

Installed 2TB disk in ubuntu server, dmesg reports it as 9444732965540666 MB

I've have an ageing Linux server running on Dell PowerEdge hardware, with a SAS 5IR RAID controller. It has a pair of SAS 146Gb disks in a RAID 1 configuration that has the OS and other software. I ...
0
votes
1answer
385 views

How can I locally analyze SMART logs from a server?

I have Ubuntu 10.04 server running on a desktop at home. I rebooted, and the machine was unreachable after 10 minutes or so. At this point I should have connected a console (monitor using VGA cable). ...
0
votes
1answer
766 views

Need advice on which PCI SATA Controller Card to Purchase [closed]

I have a major issue with the build of a machine I am trying to get up and running. My goal is to create a file server that will service the needs of my software development, personal media storage ...
1
vote
1answer
878 views

How to enable SATA in Centos 5?

I have a centos 5 linux box which is currently running off an IDE drive. I want to install a couple of SATA drives as backup drives for now. I have googled that there can be complications with SATA ...
0
votes
1answer
976 views

detect specific device is USB / SATA apart from dmesg output

Suppose in a linux machine you have both SATA and USB devices present, and if they are all detected properly, how do you know whether a specific device(sda1/ sdb1) is USB device OR SATA device. Note: ...
5
votes
3answers
4k views

Making SATA disk write cache safe

Supposedly (see, e.g., a question about it here), with NCQ enabled drives, the drive write cache is supposed to be safe, as in it doesn't like to the OS about data being committed to the platters when ...
3
votes
5answers
2k views

Which hard drive corresponds to ata1.00 and ata12.00?

I have an Ubuntu installation which has a lot of hard drives. Two of these drives have hiccups and SMART is reporting errors. However, I cannot figure out how to determine which drive is ata1.00 and ...
0
votes
1answer
1k views

Mystery stack traces in /var/log/messages

I am seeing the following messages in my server's /var/log/messages. They look like stack traces and are not preceded by any narrative (e.g. "such-and-such has gone wrong"). I am almost certain they ...
1
vote
4answers
232 views

Install Ubuntu on USB drive then put back HD inside computer?

I would like to install Ubuntu on a hard drive that is accessed via USB. Then, when all is OK, replace the computer hard disk with that one that was USB-connected. (Computer used for USB ...
0
votes
1answer
274 views

linux need to discover local sata mirror before hba attached scsi

(none of the machines mentioned are in production) Hello, I'm trying to install Centos 5.4, which wants to put the boot loader on either the boot sector of the boot drive (a local SATA mirror, ...
3
votes
3answers
777 views

SATA drive problems with two SIL RAID cards

I've just put a second SiI 3114 SATARaid card in my home server so that I could add another pair of SATA drives and increase my storage space. Annoyingly, it doesn't seem to work: [ 32.816030] ...
2
votes
1answer
2k views

linux kernel option to set sata disk to udma/133 1.5gbps

i try to speed up boot time of my linux server box which uses removable HDD rack's the current boot time is around 2 min's but if i connect the hdd's directly to the mainboard its about 2 sec's the ...
0
votes
3answers
1k views

When using an external SATA enclosure, how can I discover newly added drives (Ubuntu Linux)?

I have been working on a system for processing data on large numbers of independent hard drives. To accomplish this, I purchased a Sil3124A 4-port eSATA controller card and a 10-bay external SATA ...
3
votes
2answers
3k views

Enabling AHCI in RHEL5 post-install

I have two servers running RHEL 5.4 quite happily. However, through simple oversight, AHCI/hotswap support was not enabled in BIOS at install time and is now needed. The machines are running ICH10R ...
1
vote
5answers
3k views

Why can't I see my new harddrive on my Ubuntu box?

I installed my new drive and put Ubuntu server on it. It was working fine except ubuntu server was a bit to raw for me. So, then I decided to go back to my old drive and use the new drive as a second ...
3
votes
5answers
7k views

how do you mount and format /dev/sda to a different /dev/ name?

We have linux box running fedora. It has a small laptop hard drive running the OS and a 3ware RAID controller running 3 SATA drives RAID 5. When we boot the computer and login, I run “fdisk –l” ...
14
votes
8answers
51k views

How do I make Linux recognize a new SATA /dev/sda drive I hot swapped in without rebooting?

Hot swapping out a failed SATA /dev/sda drive worked fine, but when I went to swap in a new drive, it wasn't recognized: [root@fs-2 ~]# tail -18 /var/log/messages May 5 16:54:35 fs-2 kernel: ata1: ...