?

Log in

No account? Create an account
entries friends calendar profile Previous Previous Next Next
Tuesday - Ed's journal
sobrique
sobrique
Tuesday
Well, it'd seem today is Tuesday. But since I wasn't in work yesterday, it still feels monday-ish. But with the end of the week being relatively less far away.

Which is nice.

My to-do list seems to be growing faster than I can clear it. At the moment, my 'by the end of the week' tasks, are probably about 8-10 days worth of work. But that's all good, since it means that 'prioritising' means I can deal with the interesting stuff, and perhaps ignore entirely the less so.


The problems we have been having with our backup server last week seem mostly sorted. Most of the schedule is completed in 10 hours, which is something of an achievement. (Our target is 12 hours, and in the past it's been overrunning by 8 or 9 on a bad day). 1.3 Tb per night, all told, but from a variety of servers, most of which running on 100mb networking. Still, a few more 'regular' failures than I'd like, but those are decreasing as I'm tracking them down, one by one. They get backed up by 'other means' on a failure, but creating a copy over NFS, to 'hand' backup is just ugly.

Our new SAN hardware has arrived, and one of those things on the to-do list is design preparation. We've got a pair of Clariions (CX700) and 4 brocade switches. Data storage in the region of 30Tb, although that's a mix of fiber channel and Serial ATA drives. And actual quantities depend on RAID layouts, we're looking at doing RAID 1 for 'high end' servers, and RAID 5 for most things. RAID5 SATA the plan is to archive or use hierarchical storage management (HSM). HSM is a cool trick, that allows us to physically move the bytes of a file to cheaper storage, whilst logically having it still in the same place. Basically, inactive files get moved onto slower disk. Problem is, our current backup server doesn't properly support it, so we're going to have to delay that for a while.

There'll be 2 fabrics, with a switch on each fabric in each room of the data centre. Migration actually looks fairly straight forward, although how much of that is because this is familiar ground, I don't know. The fact that I managed to persuade the boss, that a few K on fiber patch panels around the computer rooms, rather than laying cables individually means that it's also nice and easy. And incidentally makes my life _much_ easier. Tidy computer rooms are great, especially when it's very easy to find the other end of a cable. Labelling is great when it's in the same rack, but when it goes 'down there somewhere' finding where the hell it comes out can be a real pain.

We're also getting an NS704 NAS, which'll be dishing out files to our network. Migration of that is just going to get ugly. Userland data just has a tendancy to get scattered and splattered all across filesystems, in a manner not entirely dissimilar to excrement, hitting rotating bladed objects. As a manufacturer of steam turbines, we're good at rotating bladed objects.

We're looking at some high speed backups for our email (Lotus notes, which is almost the same thing :/) which involves 4 LTO 3 drives, transferring data directly across the SAN. 'bout 4 Tb in 6 hours.


I'll be heading to the gym Thursday I think, to have a word with one of their talented staff, about my leg. It's improving, but ... well, by _next_ Maelstrom I want to be running around the site like an alcohol crazed loony.

Walking appears to be getting gradually better, as flexibility is returning. I'm now actually going further, and at a more normal walking pace. Still, I think I'll be taxi-ing to the pub for the forseeable future. Most likely won't be at the pub on Friday, as I've had a better offer.

And on another note, I've just had an email with "Please respond by return" on it. I'm a little confused, what does that mean? I know that it was an analogy for returning a letter on the 'next post' (eg. the guy getting back on his horse, and going back the other way), but I can't really see the analogy with email.
3 comments or Leave a comment
Comments
the_wood_gnome From: the_wood_gnome Date: May 17th, 2005 06:30 pm (UTC) (Link)
It's improving, but ... well, by _next_ Maelstrom I want to be running around the site like an alcohol crazed loony.

As opposed to sitting there and ranting like an alcohol crazed loon ;)

I still can't believe they wouldn't give you an exchange rate for blow-jobs.
crashbarrier From: crashbarrier Date: May 18th, 2005 09:52 am (UTC) (Link)
And on another note, I've just had an email with "Please respond by return" on it. I'm a little confused, what does that mean? I know that it was an analogy for returning a letter on the 'next post' (eg. the guy getting back on his horse, and going back the other way), but I can't really see the analogy with email.

perhaps is a fancy way of saying "please hit the return button to reply so that we can list all the emails under one subject"???
gingerboy From: gingerboy Date: May 18th, 2005 10:09 pm (UTC) (Link)
And on another note, I've just had an email with "Please respond by return" on it. I'm a little confused, what does that mean?

I was going to ask if it was JO - but he's on holiday... :)
3 comments or Leave a comment