Tag Archive for Hard Drives

The peril of /tmp

By default, I think that Windows plants its temporary files in c:\windows\temp. In Linux or in Ubuntu at least, the equivalent area is /tmp. However,  not realising that /tmp when you shut down and start your PC could cause the silly blunder that I made today. I was doing a spot of reorganisation on my spare PC when I dumped some files in /tmp from a hard drive that I had added. I was reformatting the drive as ext3 following its NTFS former life. As part of this, I was editing fstab to automount the thing and a system restart ensued. I ended up losing whatever I put into /tmp, a very silly blunder. Luckily, I had the good sense not to put anything critical in there so nothing of consequence has been lost. Nevertheless, a lesson has been learnt: Windows allows its temporary area to pick up all kinds of clutter until you clear it while Linux clears the thing regularly. It’s amazing how Windows thinking can cause a howler when you have a lapse of concentration using a *NIX operating system, even for someone who uses the latter every day.

Windows Home Server: an interesting proposition?

If I was still running Windows as my main OS, the idea of storing my files on a separate computer acting as a server would appeal to me. After all, I very quickly developed the habit of partitioning my hard disk so that my data files were separated from the rough and tumble lives of operating system and software files. Later, I took it further by placing system files and data files on separate hard drives, an arrangement that smoothed my move Linux. Separation of computers would further secure things and that’s why Windows Home Server caught my eye when it was released. The recent spate of glitches with the thing might have changed my mind but my move to Ubuntu makes that irrelevant now. In any event, I suppose that I could have gone with Network-Attached Storage or an external hard rive. I do possess the latter, and a backup is being stored on it as i write this, and the former still remains an option but for the fact that I am happy with how things stand. In any event, the conventional networking model would be yet another potential choice. I was going to say more about Windows Home Server but I think I’ll leave that to others so here’s a library of links for your perusal.

Windows Home Server

Windows Home Server Blog

Ars Technica’s view

engadget’s low down

Crunchgear: up close and personal

The irritation of a 4 GB file size limitation

I recently got myself a 500GB Western Digital My Book, an external hard drive in other words. Bizarrely, the thing is formatted using the FAT32 file system. I appreciate that backward compatibility for Windows 9x might seem desirable but using NTFS would be more understandable, particularly given that the last of the 9x line, Windows ME, is now eight years old (there cannot be anybody who still uses that, can there?). The result is that I got core dump messages from cp commands issued from the terminal on my Ubuntu system to copy files of size in excess of 4GB last night. It surprised me at first but it now seems to be a FAT32 limitation. The idea of formatting the drive as NTFS did occur to me but GParted would not do that, at least not with my current configuration. The ext3 file system is an option but I have a spare PC with Windows 2000 so that will be a step too far for now, unless I take the plunge and bring that into the Linux universe too.

Other than the 4GB irritation, the new drive works well and was picked up and supported by Ubuntu without any hassle beyond getting it out of the box, finding a place for it on my desk and plugging in a few cables. While needing judiciousness about file sizes, it played an important role while I converted a 320 GB internal WD drive from NTFS to ext3 and may yet be vital if my Windows 2000 box gets a migration to Linux. In interim, 500 GB is a lot of space and having an external drive that size is a bonus these days. That is especially the case when you consider that the 1 terabyte threshold is on the verge of getting crossed. It certainly makes DVD’s, flash drives and other multi-gigabyte media less impressive than they otherwise might appear.

Want attention? Just mention Ubuntu…

According to Google Analytics, visitor numbers for this blog hit their highest level one day last week. I suspect that I might have been down to a mention of two of my posts on tuxmachines.org. Thanks guys. Feedburner activity has been strong too.

That brings me to another thought: the web seems a good place for Ubuntu users to find find solutions to problems that they might encounter. I certainly found recipes that resolved issues that I was having: scanner set up and using another hard drive to host my home directory, all very useful stuff. When I last played with Linux to the same extent that I am now doing, the web was still a resource but it wouldn’t have been as helpful as I found it recently. I suppose that there are people like me posting tips and tricks for computing on blogs and that makes them easier to find. That’s no bad thing and I hope that it continues. Saying that, I might still get my mits on an Ubuntu book yet…

Terminology for larger and larger disk drive data volumes

When I started into the world of computing at university, 200-300 MB hard drives were the norm for PC’s. My own first PC had what was then thought a sizable 1.6 GB disk and things have increased in size since then. I now have access to several hundred gigabytes of storage at home and we are now seeing 1TB offerings for the PC market.

Terabyte storage has been the preserve of the server market but given the disk sizes that are available now, even larger units are needed to describe the sizes of data volumes, ones that I haven’t seen before. So here goes:

Unit
 

Number of bytes
(in next smaller unit)

Number of bytes
(binary*)

Number of bytes
(decimal*)

petabyte

 1024 TB 

 2**50

 10**15

exabyte

 1024 PB 

 2**60

 10**18

zettabyte

 1024 EB 

 2**70

 10**21

yottabyte

 1024 ZB 

 2**80

 10**24

* Binary measurements are used by operating systems like Windows while decimal ones are used by hard drive manufacturers

 I know that the above strays into the realms of esoterica but, with the way that things have been going, we may be talking about petabytes before very long. As it so happens, HP recently mentioned zettabytes when talking about its range of UNIX servers and I needed to go looking up what it meant…

Hard drive cooling

Having had my main PC’s case hot to the touch last summer, I was wondering what was causing it. Components like CPU’s and graphics cards would need to generate a lot of heat to manage that. However, my main suspects are the hard drives in the machine: they do run hot after all and sit in a drive cradle connected directly to the case framework. As it happens, I was in Manchester’s branch of PC World yesterday and spotted Akasa hard drive coolers in stock for just £7.99 each. These dualfan units screw onto the base of your hard drive and their power connector can couple between a PATA power socket and a PSU power cable so that they can draw the power that they need without adding to case clutter. I bought two of the things and installed them; I’ll now see how they get on.

  • As is commonly the case with places like these, all the views that you find expressed on here in postings and articles are mine alone and not those of any organisation with which I have any association, through work or otherwise. With regards to any comments left on the site, I reserve the right to reject any that are inappropriate. Otherwise, whatever is said is the sole responsibility of whoever is leaving the comment.