Windows Server 2016 – SAS disks are not recognized in Netapp DS4486

To get started, here are the relevant hardware specifications:

  • Dell R710 with Windows Server 2016
  • Dell PERC H200e
  • Dell PERC H810
  • Dell PowerVault MD1200 with 03DJRJ controllers
  • NetApp DS4486 with IOM6 controllers

I have a total of 26 SAS drives. These are all 4TB Seagate ST4000NM0023 drives, 3TB Seagate ST33000650SS drives or 600GB Seagate ST3600002SS drives. I have tried them in several configurations in the DS4486: one drive per sled (both positions), two drives by sled, a mixture of each type in a sled, and all these configurations in several different bays of the enclosure. with unrecognized discs. If I take exactly the same drive and put it in a Dell MD1200, they are recognized and accessible by the operating system without any problem. I connected the DS4486 and the MD1200 to a PERC H200e and a PERC H810 and the results are the same. I even tried to chain the daisy chain boxes as follows: host -> MD1200 -> DS4486. The results are always the same, not all discs are recognized in the DS4486.

The drives appear in Disk Management as uninitialized drives. Drive properties indicate the correct model number of the drive. The size of the reader properties is 0 bytes. If I try to initialize the player as GPT, I get an error stating that the size is not large enough. If I choose MBR, I get an I / O error. When I run diskpart -> list disk, the output seems to freeze a bit, then the drives are displayed in the list about 30% of the time, otherwise the list is empty. If I try to use select disk <##> (using the disk management disk number), then execute any other command such as clean or online disk I get an error message in the output.

Any ideas on what to try next? If more information is needed, let me know, I will provide you with everything I can.

amazon web services – How do I determine the cause of slow I / O speeds in Windows on my EBS provisioned io1 disks in AWS?

In AWS, I have a server running Windows Server 2016 Datacenter. There are two EBS io1 disks provisioned on this server. They are provisioned up to 9,600 IOPS. The E: drive is 2.24 TB wide and is the GPT partitioning style, while the D: drive is 1.99 TB wide and is the MBR partitioning style.

I'm trying to move around 1.7 TB of data (mostly a few large SQL Server database files) from drive D: to drive E: and the write speeds I see in the transfer of Windows files experienced a short burst of around 120MB / s but averaged 30MB / s. The IOPS I see writing to the E: drive was on average about 200 IOPS, but is now much lower.

How can I debug the bottleneck behind my local file transfer speeds between the two drives? (Note: I have never seen writing IOPS over 200 on drive E: even if it is provisioned for 9,600 IOPS.)

performance – Storage of data files on separate physical disks

Does storing SQL server data files for 1 database in different drives improve performance? Is it recommended to do it? Benefits of dividing data files into multiple physical disks? There are no partition tables. The db is oltp which is intensive in reading and writing.

Sample database
AdventureWorks
D: Data AdventureWorks_1.mdf
D: Data AdventureWorks_1.ndf
E: Data AdventureWorks_2.ndf
F: Data AdventureWorks_3.ndf
F: Data AdventureWorks_4.ndf

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Error trying to reduce the number of disks in a Linux RAID array

I have a Synology NAS that I am trying to reduce a RAID6 array from 12 drives to 11 drives.

I have already reduced the size of the file system and the logical volume, but when I try to reduce the size of the RAID array to 11 disks, mdadm just gives me an error.

root@DiskStation:~# mdadm -V
mdadm - v3.4 - 28th January 2016

root@DiskStation:~# mdadm -D /dev/md2
/dev/md2:
        Version : 1.2
  Creation Time : Sat Jul 12 13:24:29 2014
     Raid Level : raid6
     Array Size : 19487796480 (18585.01 GiB 19955.50 GB)
  Used Dev Size : 1948779648 (1858.50 GiB 1995.55 GB)
   Raid Devices : 12
  Total Devices : 12
    Persistence : Superblock is persistent

    Update Time : Tue Feb  4 10:14:55 2020
          State : clean
 Active Devices : 12
Working Devices : 12
 Failed Devices : 0
  Spare Devices : 0

         Layout : left-symmetric
     Chunk Size : 64K

           Name : DiskStation:2  (local to host DiskStation)
           UUID : 263bdad7:eed15299:ff0c7a70:c97ee595
         Events : 414186

    Number   Major   Minor   RaidDevice State
      15       8        5        0      active sync   /dev/sda5
       1       8       21        1      active sync   /dev/sdb5
       8       8       37        2      active sync   /dev/sdc5
       9       8       53        3      active sync   /dev/sdd5
       4       8       69        4      active sync   /dev/sde5
       7       8      117        5      active sync   /dev/sdh5
       6       8      101        6      active sync   /dev/sdg5
       5       8       85        7      active sync   /dev/sdf5
      11       8      133        8      active sync   /dev/sdi5
      12       8      149        9      active sync   /dev/sdj5
      13       8      165       10      active sync   /dev/sdk5
      14       8      181       11      active sync   /dev/sdl5

root@DiskStation:~# mdadm --grow -n11 /dev/md2
mdadm: Not allowed to reduce the number of devices.

I have very little experience with this stuff, and the fact that I can't find anything online about this particular error has left me in a bind.

I followed these instructions here, and they say that I should be asked to reduce the size of the table. Should I just go ahead and reduce the size of the bay anyway without being prompted? How do I know what size to make?

centos – Refresh disks on the system live without rebooting

I have 4 disks on a server. This is a live server. I replaced one of these drives with another and changed the mount point of the new drive in order to avoid any confusion.

After completing initialization and mounting the new drive in place of the old one, as well as updating /etc/fstab, the command df -h still shows the old reader. Rebooting might fix the problem, but this is a live server that I don't want to shutdown for the 10 minutes or so it will take to reboot (I know the time because I & Have restarted before and the root drive is not an SSD).

Here is my abbreviated exit from df -h, with a notation on which is the new and the old reader:

/dev/mapper/vg-root  ... /
...
/dev/sdb1            ... /home3 << old drive (removed)
/dev/sdc1            ... /home4 
/dev/sdd1            ... /home5
/dev/sde1            ... /home6 << new drive (working)

Instead, I would like to refresh the disks displayed in df -h without restarting the server. Which command in ssh will do this without restarting the server?

Start or run Windows XP on Linux on separate disks without virtualization

I have Linux and windows on two separate disks and they boot separately. I start on Linux for Chrome, but when I need "old school" programs, I start on Windows. However, it's a bit boring. Anyone know how on Linux, a way to boot Windows disk in a separate Linux window? As if I was on a remote desktop, I have heard of "Linux user mode" but I don't know if it is capable of doing this.
The simplest way of my goal is to clone the Windows disk on VHD and run VMware. But I am looking for other solutions. Any new ideas would be appreciated.
Thank you

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1024 MB of RAM guaranteed
2048 MB of Burstable RAM
50 GB of disk space
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2 cores
2048 MB of RAM guaranteed
3072 MB of Burstable RAM
80 GB of disk space
5 TB bandwidth
1 Gbit port
1 dedicated IP
SolusVM control panel

Click to place your order

KVM3072 For $ 35.50 USD / month
2 cores
3072 MB of RAM guaranteed
4608 MB of Burstable RAM
100 GB of disk space
Bandwidth 7 TB
1 Gbit port
1 dedicated IP
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We can offer you a personalized configuration adapted to your needs.
Contact us with your requirements and we will send you a quote within 12 hours!
It’s so easy!

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Send us an email: [protected by e-mail]
Contact directly via the contact form: http://www.shineservers.com/contact.php
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linux – How to read 3Ware disks without the controller?

I have an old 3Ware 9650SE which does not work with my current motherboard. It is recognized, but gets tons of CRC errors every time Linux tries to do something other than ask what kind of card it is.

I have a bunch of disks that contain old file systems that were connected to this card.

Is it possible to extract information from these disks without the card? I only have 4 drives and lots of free SATA ports to connect them all.

I was doing RAID5.

Formal definition of the RAM model with D blocks B disks, fast memories M and P processors

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