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Are Laptops with 2 drive bays limited to 17 inch models? - m654321 - 04-26-2016
Are 17-inch laptops the only size that come equipped with two drive bays, or can two drive bays be found in smaller laptops?
I'm having difficulty finding any information on the net, for either new or old laptops, concerning the number of bays they contain for fitting
either SSD or HDD.
Thanks for any info - maybe I should start a separate thread to survey the number of drive bays for named makes/models of Linux Lite
members' laptops ...
Mike
Re: Are Laptops with 2 drive bays limited to 17 inch models? - LL-user - 04-26-2016
Hi Mike,
Would you also take into consideration to replace a CD/DVD drive with a HDD caddy? That would give you the possibility for a second HDD also in smaller models. I saw such caddies for example for Dell Latitude laptops.
Hope that helps
Re: Are Laptops with 2 drive bays limited to 17 inch models? - torreydale - 04-26-2016
That type of caddy also exists for Lenovo Thinkpads. The Thinkpad T420 was specifically mentioned with this capability in a recent "Going Linux" podcast (Mar 20, 2016: Show #295 · Linux on ThinkPads).
Re: Are Laptops with 2 drive bays limited to 17 inch models? - paul1149 - 04-26-2016
17" is the only size I've ever seen with 2 HDD bays. Beside the optical bay conversion, if your laptop has a usb 3.0 port, that should run a usb 3.0 external HDD enclosure about as fast as SATA (not sure of the exact specs). And then there's the eSATA port.
Re: Are Laptops with 2 drive bays limited to 17 inch models? - Wirezfree - 04-26-2016
Not sure if you just want more storage or specifically 2 separate drives, or something else.?
There are devices like this "Dual mSATA to 2.5" Adapter"
It can be configured in different ways...
Depending on the Laptop SATA Controller it can appear like 1 big drive or 2 separate drives.
or be used in RAID Mode.
Re: Are Laptops with 2 drive bays limited to 17 inch models? - m654321 - 04-27-2016
Thanks guys for your feedback. I wasn't so much thinking of optical drive to hard drive conversion, or the external drive possibility, but simply what the laptops come with. I like to know what I'm buying. I wanted to purchase a second hand laptop with two drive bays that I could use as my "experimental PC" so if it crashes it won't affect anything important. Why do I like two drives? A couple of reasons. On the two Asus PCs in our house (see footnote signature), I like to have two separate physical drives because (1) one drive can be used to keep data files separate from the OS drive in a single data partition that spans the entire disk, and the other reason (2) if some of the OS files are distributed between two drives, the OS runs quicker as you have two drive readers working at the same time.
Mike
Re: Are Laptops with 2 drive bays limited to 17 inch models? - Wirezfree - 04-27-2016
(04-27-2016, 05:01 AM)m654321 link Wrote: (2) if some of the OS files are distributed between two drives, the OS runs quicker as you have two drive readers working at the same time.
Mike
Hi Mike,
You may already know.?, Out of the box the only "buntu" based distro that I'm aware of that offers the above is "Ubuntu Server"
To achieve this "striping" you need to use RAID, either a hardware RAID controller, or Software.
In the case of "buntu" based distros, software raid uses "mdadm", not installed by default, but is in repo.
I have been playing with RAID 10, 4 disks, but I keep failing at the last step for some reason
I did get 1 method going in a Virtualbox, but it had a single point of failure by having an extra /boot partition on 1 disk.
It should be possible with latest GRUB to boot from RAID array, but I seem to be missing something.
Re: Are Laptops with 2 drive bays limited to 17 inch models? - m654321 - 04-27-2016
Quote:You may already know.?, Out of the box the only "buntu" based distro that I'm aware of that offers the above is "Ubuntu Server"
To achieve this "striping" you need to use RAID, either a hardware RAID controller, or Software.
In the case of "buntu" based distros, software raid uses "mdadm", not installed by default, but is in repo.
I have been playing with RAID 10, 4 disks, but I keep failing at the last step for some reason [img alt=
I did get 1 method going in a Virtualbox, but it had a single point of failure by having an extra /boot partition on 1 disk.
It should be possible with latest GRUB to boot from RAID array, but I seem to be missing something.
Thanks Dave - I didn't know that - that's one misconception sorted for me...
So for example, from what you've just said, it therefore doesn't make any difference to PC speed (under a straightforward non-RAID setup) if the OS is installed either (1) entirely as /root on a single physical drive or, (2) with /root on one HDD and a separate /home on a second HDD, i.e. without RAID the two HDDs unable to work simultaneously to effect an increase in PC speed.Mike
Re: Are Laptops with 2 drive bays limited to 17 inch models? - Wirezfree - 04-27-2016
Hi Mike,
Without RAID having / and /home and /data on on separate disks will improve performance, but by how much.?
It will all depend on Hardware/CPU/Memory, and how data intensive the applications you are running
Using certain types of RAID and multiple separate disks can make a significant impact.
There are many types of RAID, it can be used for "Performance" or "Redundancy" or "Combinations"
It's actually a complex subject in terms of "Tuning" & Optimisation", beyond me...
I'm interested in Linux RAID 10,
this gives you a degree of performance boost, and some redundancy, but ideally 4 disks for better redundancy.
Some references info:
https://en.wikipedia.org/wiki/RAID
Re: Are Laptops with 2 drive bays limited to 17 inch models? - m654321 - 04-27-2016
Quote:Linux Raid 10, this gives you a degree of performance boost, and some redundancy, but ideally 4 disks for better redundancy.Four disks: I assume that's a PC Tower set-up!
Mike