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Questions tagged [hardware-raid]

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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Low random read IOPs for 5 SSDs in hardware RAID5 setup

We have 5 Toshiba Px04Srb192 SSDs (270K random read IOP as per spec), setup in hardware Raid5. Running fio is giving 250K IOPs which is much below what I was expecting. /fio --randrepeat=1 --ioengine=libaio --direct=1 --gtod_reduce=1 --name=test…
user1959200
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Is a hard reset equivalent to power loss for storage devices and file systems?

There are trade-offs regarding data safety vs performance when configuring storage. Some faster settings are only recommended when one does not expect power outages, e.g. because the server has a battery backup unit (BBU). Manuals and articles…
isarandi
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Adaptec RAID Controler - Logical device in Failed state

I have a hardware Adaptec ASR8405 RAID controller on which I have 15 disk RAID6 Array. One of the disks broke and after the replacement the Controller did not pick up on it, did not start the rebuild but went into Failed state instead (see…
wwn
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Windows 10 installation on Dell T7600 with PERC H310 Raid Controller

We work in an environment with machines running mostly CentOS 7.3 but from times to times we need to switch to Windows 10. To manage those changes, we have a PXE boot solution with tree options: boot currently locally installed OS reinstall CentOS…
Kevin Lemaire
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linux + How to verify hardware or software RAID?

Is it possible to know by Linux command if my RAID is HW or SW RAID? for example in my machine - BLADE from dell MANUFACTURE by /ptoc/mdstat seems my RAID is "SW RAID" ? cat /proc/mdstat Personalities : [raid1] md1 : active raid1 sdr2[1] sdq2[0] …
shalom
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StorCLI: storcli show and "Hlth: Opt": how exhaustive is this?

I'm working on a script using StorCLI (Ver 1.21.06). When I run: ./storcli show I get (abbreviated): Status Code = 0 Status = Success As well as: Hlth: Opt Q1. I'm curious to know what the Status/Status code actually means: does this have…
gravyface
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Which drive in RAID has bad sectors?

I have 4 physical drives in a single virtual drive using an LSI MegaRaid SAS controller. It seems (at least) one of the drives has bad sectors because: io errors occur when attempting to back up some files running badblocks reports some bad…
James
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Remove spare from OS array, add to data array

OK, from what I've been seeing online (including at this link Repurpose spare drive in HP ProLiant RAID 5 array) it should be pretty simple to do what I need. I just want to get confirmation, since I haven't dealt with RAID arrays in years (when…
Steve Freeman
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Checking RAID events log or history of a Smart Array P400 in a HP ProLiant DL380 G5 server

In a rack-mounted HP ProLiant DL380 G5 server, running Linux (RHEL - Red Hat Enterprise Linux Server - version 5.9, 64-bit): after a shutdown and power on, one of 4 hard disks of a Logical Drive using "RAID 1+0" started "Rebuilding". I was able to…
ricmarques
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FBWC and Zero Memory (ZM) RAID Controller on HP DL360p

I got a chance to work on HP DL360p Gen8 server with Smart Array controller P420i/ZM What are the advantage of having FBWC or BBWC Will it be possible to add an external P420/1GB or P420/2GB to this server. Can a FBWC give better performance for…
Jai
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Safe and beneficial to enable HD disk cache for disks in RAID, or not?

Dell Perc RAID cards (among others) allow you to set the disk cache policy to be either on (meaning, the individual hard disks use their built-in caches) or off (meaning, the individual disk caches are disabled). In reading discussions on the net,…
mhucka
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load balancing in multiple hardware raid arrays - soft raid 0 acceptable?

We have a central storage server (PowerEdge R720) serving shared files to an HPC cluster, and it has two hardware RAID controllers attached (PERC H810, each driving 2 MD1200 enclosures filled with 7200rpm 4TB disks). As with typical HPC workload,…
Carl Lei
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Stress Test Hard Drive attached to a LSI controller on Hyper-V

I have a LSI 9265-8i controller running on Hyper-V. How can I stress-test the hard disks in-situ? I'd like to test things like iOPS, seek times etc.
RGI
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Rotate entire disk set in RAID0 array?

We have a Lenovo RD430 with a RAID 500 controller. Installed in the server are 6x 4TB drives configured as 2x RAID0 arrays of 3x 4TB each, however, we also have another 3x identical 4TB drives and would like to be able to rotate one of the arrays on…
JimmyJ
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Should I be concerned by frequent RAID warning message (unexpected sense - command aborted)?

I have a Fujitsu host (PRIMERGY RX300 S6) running Windows Server 2008 R2 and Hyper-V (Version 6.1) with two virtual servers (one Windows Server 2008 R2 and one Windows Server 2012). Our 25 employees are continually connected to the virtual servers…
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