All Questions
Tagged with raid performance
67
questions
1
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0
answers
41
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When I use four drives, one operates very slowly
I’m experiencing unusual behavior with my system. When I attempt to write to four disks concurrently. In fact, the last disk (/dev/sdd) consistently operates at a speed ranging from 40MB/s to 5MB/s.
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- 11
1
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1
answer
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Linux MD software raid stripe cache size
From what I can piece together the /sys/block/md0/md/stripe_cache_size is for raid5 and 6 set at a very low default value to avoid starving machines for memory.
By increasing this value you can get a ...
CommunityBot
- 1
32
votes
6
answers
29k
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Does RAID1 increase performance with Linux mdadm?
I have a cheap 2-bay NAS with a 2TB HDD. To be robust against disk failure, I'm thinking of buying a second 2TB HDD and putting it in RAID1 with Linux mdadm. The file system is ext4.
Will this ...
- 101
1
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0
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41
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Are there any performance issues with allowing a hard drive to become full if the drive is effectively read-only?
I'm fairly confident that the answer is "no issues," but I'm asking here in case there are any quirks that I'm failing to consider.
Context
I have a large storage array (on a Linux system) ...
- 200
0
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0
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207
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What's the fastest file system setup for transferring from NVME to HDD?
I'm trying to figure out the proper system layout for transferring data from fast storage to slow storage with minimal bottlenecks. I have a fast array of RAID 0 NVME drives used for daily tasks. At ...
- 141
1
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3
answers
3k
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Windows 10 Pro - Very Slow Bootup // Here's My :: Windows Performance ToolKit (ETL) File
PROBLEM
I installed a FRESH copy of Windows 10 Pro onto my formatted SSD RAID0 drive. This is not an Upgrade from an older OS. Each time on startup (not from SLEEP but actual full startup / restart)...
- 2,428
10
votes
11
answers
46k
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Can someone explain RAID-0 in plain English?
I've heard about and read about RAID throughout the years and understand it theoretically as a way to help e.g. server PCs reduce the chance of data loss, but now I am buying a new PC which I want to ...
- 81
1
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1
answer
4k
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Network speed versus HDD speed in NAS RAID5 configuration
I'm considering a QNAP 653D 6-bay NAS with 8GB of memory and an array of 12TB Seagate Ironwolf NAS HDDs configured in RAID 5 (initially with three drives that I bought on sale and expanding to 6 later)...
- 173
0
votes
0
answers
51
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Ramdisk speeds on older server bottlenecked when rsyncing files vs dd
Why am I seeing poor copy performance in memory?
Background and details:
While testing a RAID 10 on an older server, I wanted to see whether or not other parts of my system were bottlenecking my ...
- 238
0
votes
1
answer
901
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RAID vs DFS: What's the difference?
I know the question sounds quite stupid, as to why RAID (Redundant Array of Inexpensive Disks) is compared with DFS (Distributed File System), I may get downvoted.
First of all, I'm aware that RAID is ...
- 11.8k
2
votes
2
answers
6k
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Performance of RAID 5 with mdadm
I have set up a software-raid 5 with mdadm on a 1.3 GHz AMD Neo 36L dual core machine using 3 1.5 TB Seagate Barracude Green drives (4k sectors). The chunk size of the raid is 512 KB. On top of the ...
- 3,440
6
votes
2
answers
12k
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Very slow volume expand on Synology ds2413+
I've posted this elsewhere on the internet aswell, and will obviously reply in both places if a proper solution is found.
I am attempting to expand SHR volumne (2x4TB, 1x2TB) with additional 4TB ...
- 65.3k
0
votes
1
answer
203
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How does loss of single drive influence 4k random performance of RAID 1 array?
Here is one explanation of the benefits of RAID 1:
"As different disks can seek on different data, it [RAID 1] has up to 2x the random read IOPS but the same 1x (or slightly lower, due to ...
CommunityBot
- 1
1
vote
1
answer
3k
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Is RAID 1 the highest read speed type?
We have some servers that provide a web server with about 4,000 files with 1GB of each.
Always have a problem on bandwidth that server can’t produce on more than 800Mbps and it’s from the read speed ...
- 65
0
votes
1
answer
726
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Will setting up RAID 1 on secondary HDD(s) where games are installed affect performance?
I'm recently setting up a new computer and was trying to decide if I should set up RAID 1 on my computer.
My setup has a small (240gb) SSD for Windows and maybe one or two games I play most often, ...
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