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0
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1answer
44 views

Using Seagate 3TB drives with a Dell PERC 710 - do I have to worry about align and sector size?

I'm going to setup our new server with 8 3TB HDD from Seagate. They come, as far as I know, internally with 4K sectors. I've run this past weekend some burn-in tests on the disks, before setting them ...
3
votes
1answer
173 views

SSD Software RAID Alignment Necessary?

Is it necessary to have the partitions that makeup a software RAID 1 array be aligned? This guide states "Software RAID: Although one needs to pay attention to correct alignment here as well, ...
7
votes
1answer
110 views

Disk size addressable by the OS

I have a 3ware 9550SXU-12 storage controller and 750G disks connected to it. The disks are configured as single units (not JBOD). I've been running some performance tests, mainly to see the impact of ...
2
votes
1answer
261 views

Is file system alignment required on hardware-raid with SSDs?

We are building a raid-10 with LSI 9260-4i + 4 x Intel DC S3500 SDDs. Partition alignment From what I understand I need to start fdisk with -H32 -S32 or Ted T'so variant with -H224 -S56 in order to ...
5
votes
1answer
273 views

Checking partition alignment with PowerCLI

I'm trying to verify that the file system partitions within each of the servers I'm working on are aligned correctly. I've got the following script that when I've tried running will either claim that ...
1
vote
1answer
84 views

aligning partition boundaries of already installed system

I have qemu raw disk which includes two partitions. The second partition is not aligned according to ssd principles. I will move this into Smartcloud environment and they suggest aligning according to ...
3
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3answers
804 views

Aligned partitioning of 2TB disk with Linux fdisk

Is there a way to create a single 2TB partition, which is 4096-byte-sector aligned, on a disk using the standard Linux fdisk (I have tried version 2.17.2)? I've tried the following things and ran ...
3
votes
1answer
357 views

Quantifying the effects of partition mis-alignment

I'm experiencing some significant performance issues on an NFS server. I've been reading up a bit on partition alignment, and I think I have my partitions mis-aligned. I can't find anything that ...
2
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0answers
372 views

linux hardware raid 10 / lvm / virtual machine partition alignment and filesystem optimization

I've been reading everything I can find about partition alignment and filesystem optimization (ext4 and xfs) but still don't know enough to be confident in setting up my current configuration. My ...
5
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2answers
1k views

Linux: How to align partition and file system on hardware RAID

I have a test box (PowerEdge 2950) with a Perc 6/i and 4x 15.5k SAS drives attached (with 512 byte block sizes). These are in a single RAID 5 virtual disk with a 64KB chunk size. I am creating a ...