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May
4
answered php crashes when I try to add extensions
May
3
comment ZFS: Mirror vs. RAID-Z
RAID-Z's parity is a superset of ZFS's in-built checksumming. All the checksum does is ensure that the data being read from the disks is correct. It's designed to be a fast check with little overhead. What RAID-Z's parity gives you is the ability to rebuild damaged data in the event of loss of a drive (or 2 for RAID-Z2). But the calculations to generate this parity data is much more CPU intensive than a simple block checksum, and must be calculated on an entire stripe, even if you're only writing a 4KB block.
May
1
answered Windows Server task manager displays much higher memory use than sum of all processes' working set size
Apr
30
comment What's the most widely used pronunciation of the Unix /etc directory?
Some people pronounce "cache" similar to "catch". Regarding the question itself, I always just spell it out. I visibly wince when someone pronounces it "etsy" (like Betsy).
Apr
30
awarded  Supporter
Apr
29
awarded  Commentator
Apr
29
comment Backing up large network (~200 clients) — Enough Bandwidth?
Network Stored PST files ... don't do it!
Apr
28
comment Backing up large network (~200 clients) — Enough Bandwidth?
If you're going to do server side PSTs with a Windows server, you'll have to have a 64-bit OS. With 32-bit Windows, it's possible to deplete the non-paged pool and cause all kinds of problems with the server. I don't have any links handy, but you can Google for more information.
Apr
28
comment Backing up large network (~200 clients) — Enough Bandwidth?
Recent versions of ZFS have this, and I think other SANs may as well. Exchange's mail store also does Single Instance Storage.
Apr
28
comment Backing up large network (~200 clients) — Enough Bandwidth?
You also need to consider that you're asking your servers to store a lot more data and do a lot more work. Make sure that they're not only up to the task but that there's a disaster recovery plan. One desktop HD crash means one person is offline until their PC is repaired or replaced. Your IMAP server crashing means nobody can do anything until it's up and running again. "Having a backup" might not be enough if it's going to be a week before the server can be repaired.
Apr
28
comment Backing up large network (~200 clients) — Enough Bandwidth?
Simply moving to IMAP isn't going to get you everything you want. If your users are using Outlook for more than just mail, you'll need to find a way to backup things like their contacts, calendar, tasks, etc. Outlook also isn't a particularly great IMAP client either.
Apr
28
comment Backing up large network (~200 clients) — Enough Bandwidth?
That's exactly what delta encoding is for. Determine which parts of the file have changed and only transmit those pieces. xdelta and rsync are programs to do this on a low level. Any good online/cloud backup software also does this to minimize the amount of data that needs uploaded, including CrashPlan, Mozy, Carbonite, BackBlaze, etc.
Apr
28
answered Backing up large network (~200 clients) — Enough Bandwidth?
Apr
28
comment Legacy non-dpi-aware application resolution scaling?
Buy Fresnel Lenses for users that need them? I'm only half joking - see here. That's a random Google hit, not an endorsement or recommendation of any kind.
Apr
24
answered Cannot create Windows Service for MySQL (Vista)
Apr
23
awarded  Teacher
Apr
23
comment Reverse DNS Lookup from the Command Line
That or see if DomainTools has an API for querying their database. FWIW, it looks like DomainTools is doing it by building a DB based on A records of the domains themselves, so it's pretty incomplete. For an IP address that I control, it said there were 12 domains. It's correct in that there are 12 domains with A records for the domain name pointing to the IP, but incorrect in that it missed subdomains and domains forwarded by GoDaddy.
Apr
23
comment Reverse DNS Lookup from the Command Line
My answer still stands. domaintools.com must be building their own database of this information via some other method.
Apr
23
answered Reverse DNS Lookup from the Command Line
Apr
22
comment Legacy non-dpi-aware application resolution scaling?
Urgh... That's a bad place to be in. Maybe there's some obscure setting in the Application Compatibility Toolkit you can take advantage of?