I'm considering moving a large database from mechanical disks to SSDs.
We're provisioning a new production server for our reasonably busy website. Our choice of host have available a 6 drive configuration with a LSI 9260-8i card.
My initial thought was to fill all six bays with SSDs (Intel 520 256gb) and set them up in RAID. Good, bad, or terrible idea?
Can the card handle it? Should we be using RAID 5, 6 or 10?
I am considering implementing an iSCSI shared storage array using SATA SSDs instead of the 15k RPM SAS drives we normally purchase.
We normally use RAID 10 because of spindle contention with the random IO produced by virtualized workloads.
I was wondering if we could switch to RAID 5 or RAID 6 to have more usuable space now that spindle contention is less of an issue.
I have a question about speed performance with two separate SSD drives comparing them to RAID mirror array.
We all know SSDs are fast... but aren't all that great when it comes to any computer that writes to disk many times in any given minute.
Are there any SSDs that are suited for an enterprise environment? What am I looking for in an SSD that signifies that "This one is better for a work-horse server"?
Or maybe there isn't such a thing?
SSDs (Solid-State Drives) are a hot topic right now for a number of reasons; not the least of which being their power to performance ratio. But to better understand SSDs you should first get a grip on how they are constructed and the features/limitations of these drives.
This has been quite an ordeal, but I think I'm close to having what I need working. Long story short, my office bought 2 Samsung 830 SSDs for my development PC, but after installing them I realized they weren't usable due to an issue with the SATA controller on my motherboard (P5N-D).
My KVM guest does max. 200MB/s although the host does easily > 700MB/s (Raid 0 with 4 SSDs).
Configuration: File-based storage (raw), cache none.
Host 24 cores, 96GB ram, Ubuntu 12.04.1 LTS and virt-manager.
I suspect the CPU to be the bottleneck (one core goes up during hdparm).
Anyone experienced the same or has an explanation ?
Hey guys~
There are 2 SSDs in my laptop, my Ubuntu OS is on one of them, however, I can't detect the other one =(
My laptop has a storage of 128G and had a win7 OS initially.
A few weeks ago, I wanted to add Ubuntu to it, but the installation of grub always failed.