Recently in Sun Microsystems Category

Distrowatch guru Ladislav Bodner has been rolling more than a few operating systems onto his ASUS Eee PC 900 netbook — probably the most popular netbook out there at this point (they even sell them at Target now).

In this week's Distrowatch (which I recommend as a must-read for anybody who wants to follow what's happening in Linux and the BSDs), Ladislav writes about how a mouse-over problem that tends to freeze the screen in Ubuntu Netbook Remix on the ASUS Eee was solved in the Linux kernel but almost immediately returned due to the relevant patch being pulled from the kernel because it began causing other problems.

Ladislav goes over how you can go backward from Linux kernel 2.6.28-11.41 to 2.6.28-11.40 and get your ASUS working again under Ubuntu Netbook Remix.

He also provides a tip for those using SSD (solid-state drive) disks on how not to wear them out:

Finally, a quick reminder for those who are about to install Ubuntu Netbook Remix (or any other Linux distribution) on a netbook with solid state drives. Since these drives have a limited life span that depends on the frequency of write access to the drives, you can greatly prolong their life span if you follow these two rules while installing your preferred distribution (here is the source of this information, although there are those who dispute this):

* choose a non-journalling file system (e.g. ext2)

* don't create a swap partition

As Ladislav says, there is some dispute about the life of flash media in everything from those mini USB drives and SD camera memory cards to devices designed to replace traditional IDE and (mostly these days) SATA .

Some people have said that the MTBF (mean time between failures) for SSDs is so low when compared to spinning hard drives that the devices will last much longer than traditional spinning hard drives due to the lack of moving parts in an SSD. They say that worry about killing the flash memory with repeated write cycles is overblown.

But others are worried about killing their flash memory too quickly and take precautions such as the recommendation above not to have swap space on the drive.

For those who might not know, most operating systems do use swap space on the hard drive in the event that your computer's RAM (memory) fills up. I won't go into just how much space you need for swap because that's a whole new topic that's been discussed countless times in countless places. (I generally set aside 300 MB for swap on my systems).

Even Windows uses swap (that's one of the reasons your box tends to slow down after it's been running all day [or week/month/year]) — you've got a lot of critical stuff that the OS has written to the swap area of the drive.

Back to flash/SSD memory: As I say, some people think that worrying about excessive writes to flash is unwarranted. While I'm tempted to say that you shouldn't use an SSD on a server, Sun Microsystems (yep, the company bought recently by Oracle) is offering SSD-equipped servers and storage arrays. Sun thinks SSDs are the (near) future in servers since performance gains are too large to be ignored.

Sun is using single-level cell (SLC) flash memory, which has a much longer life than the cheaper multilevel cell (MLC) devices that pack more memory into the same space but have shorter write/erase lives.

We're a bit far away from the ASUS Eee PC and Ubuntu at this point in the post, aren't we?

Maybe. But here's what I want to say about flash-based storage: I'm all for it. I'd like to start moving everything I have to SSDs as soon as fiscally possible.

One thing I really like is a silent PC: no fans, and no spinning hard drives. If you've ever worked on a system with drives snaking out of the back of the case and sitting on a table (I did it for years), you know how much noise traditional hard drives make and how much heat they throw off.

For the energy and noise considerations alone, I'd like to dump spinning hard drives.

To that end, I'm doing one test and hope to do another soon. I've been running my Self-Reliant Thin Client (converted Maxspeed Maxterm) with an 8 GB CF card in the box's built-in CF-to-IDE adapter as the unit's main drive. I am still running Debian Etch on it (and will continue with it until I manage to get networking into the room). The box isn't in heavy use at present, but it is running (and has been this time for more than a week). I do have swap set up on the flash, and with only 256 MB of RAM, it'll probably get used a bit.

I'm running regular backups of the /home files to a 1 GB USB flash drive with rsync, so I have an all-flash system.

It's not fast. A low-end CF card (mine is a Transcend) doesn't have the performance of a top-of-the-line SSD. For one thing, the Transcend uses MLC instead of SLC and for that reason alone should have a shorter life.

I'll keep the box running for quite some time to monitor its progress with the flash memory and see if it can withstand repeated use. An upgrade from Etch to Lenny would definitely tax the CF card.

Another thing I'd like to try is an SSD in one of my laptops — maybe the $15 Laptop (Compaq Armada 7770dmt), which I've recently put back into service. At least the drive is easy to get to.

My ongoing quest for a Sun Sparcstation 20 continues. Why do I want a 13-year-old box that was beyond cool in the mid-'90s but is still ... 13 or so years old?

If you've read this blog over the past 1,000 entries, you probably don't have to ask that question.

(Answer: I enjoy working on old iron. ... but I should probably be thinning the herd, not the other way around.)

If I do manage to acquire a Sparcstation, I could run Solaris (which is what it was made for), possibly Debian but definitely OpenBSD, NetBSD and, I just learned, a version of Slackware called Splack Linux will also run on Sun hardware.

Do you have a Sun box now? Did you have one years ago? What do you remember, good and bad?