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Questions tagged [raid-controller]

Raid controller is a device to manage physical disks

Raid controller is a special device used to manage multiple physical disks and present them as logical units. It implements hardware raid. It can be referred to also as disk array controller.

Disk array controllers provide:

  1. Backend interface to communicate with the controlled disks such as SATA, SCSI, etc..
  2. Frontend interface to communicate with the computer host such as HBA.
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Replace SAS disk for HP ProLiant 380DL Raid1

I have HP Proliant Server 380DL G9 with 5 SAS disks, (2 disks for raid 1,also 2 disks raid 1 and the last one is raid 0) one of the disks in the 1st raid 1 is flashing orange, so its recommended to replace the flashing disk with new one. How to…
Extreme FOX
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Why would one need a SAS-SATA controller card?

These are used in servers and NAS devices. But why would it really be necessary? Is it mostly to offload the RAID management and calculations to a different CPU than the one from the machine? Or does that matter more for a server that has many more…
aardbol
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What is the maximum physical drive size on an HP p420i RAID controller?

How big hard drives can be used with an HP p420i RAID controller? HP mentions that 8 TB drives can be used.
David Jonsson
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Windows Server crash with multiple RAID controllers

I have 4 controllers on Proliant DL580 G7: P410i, LSI9261, P812, P410.After adding last two or one OS (Windows Server) started to crash. Eliminating last two helped (disabling them in RBSU). But I need them: I have 6 cages (each with 4 HDDs) and…
Mark Smirnov
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What is meant by outstanding IO request in a host controller (e.g. HBA/RAID card)

In context of a host controller (HBA/RAID card) which sends IO traffic to SAS/SATA drives which are part of logical volume - so in such setup, generally I hear a term "Outstanding commands". I did got somewhat understanding that these are number of…
Pravar Jawalekar
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Adding second RAID controller to a motherboard with onboard RAID controller

One of our server ASUS M4N78AM motherboard that comes with an onboard RAID controller. We have already utilised it and are running out of space. Would it be possible to install an additional RAID controller and add more hard drives? Is that…
joduh
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Write performance issues with SSD RAID 10 on P840/4gb fbwc

I have a new system with 4x512GB Samsung SSD 850 in a RAID10 array using P840/4gb fbwc RAID controller. When i download a file from network (10 Gbit/s) write speed is not that good. I tried downloading a single 1000MB file using wget: Saving to:…
Laord
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