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location Australia
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visits member for 2 years, 11 months
seen Apr 16 at 9:48

I'm a freelance Enterprise IT consultant based in Perth, Australia.

I currently specialise in server consolidation, performance analysis, storage design and configuration, system monitoring, and high-availability architectures. In the past I've been a programmer, system administrator, systems architect, and vendor liaison.

I have designed, configured, troubleshot, programmed on and managed systems including several flavours of Solaris, Linux, VMware, and Windows Server. I have also designed, configured and integrated disk storage from Engenio, Sun, HDS, and EMC for use in heterogeneous environments, and tape storage from StorageTek (now Oracle), including backup servers and petabyte-scale HSM systems.

In 2008 I completed an MBA at the University of Western Australia in which I received several awards and prizes. With the MBA I gained an understanding of business requirements, project management, market analysis and product lifecycles.

If you'd like to enquire about engaging me for a project, please get in touch at tom.shaw<at>solidsystems.com.au.


May
24
awarded  Yearling
Sep
22
comment ZFS (NexentaStor) and 4k Advanced Format Partition Alignment
Thanks @PatJames - it looks like solarismen.de has changed to solaris.kuehnke.de, so I have updated the links
Sep
22
revised ZFS (NexentaStor) and 4k Advanced Format Partition Alignment
Updated the Solarismen links
May
24
awarded  Yearling
Mar
11
answered LDAP auth in Ubuntu PAM?
Nov
28
accepted Filesystem space available using SNMP
Nov
28
asked Filesystem space available using SNMP
Oct
16
comment ZFS - setting physical disk start point of pool/filesystem
You may actually end up with worse performance if you use slices instead of whole disks, due to the way ZFS handles the disk write cache
Sep
27
comment HTTP download very very slow. FTP normal
On Linux I would use tracepath or traceroute --mtu. A bit of Googling brings up mturoute for Windows, so maybe mturoute -t yourhost.com will give you some more information.
Sep
27
answered Solaris: Offline a disk at a low level, without rebooting
Sep
27
comment HTTP download very very slow. FTP normal
Thanks for the update. As per my original answer, this is consistent with a Path MTU Discovery issue. You should make sure ICMP packets are not blocked by your hosting provider or by your own network.
Sep
26
comment HTTP download very very slow. FTP normal
If the download from the local machine is fine, it sounds like a network problem. You'll probably need to ask your hosting provider for help.
Sep
25
answered Will adding more ram decrease CPU use?
Sep
24
answered HTTP download very very slow. FTP normal
Sep
24
comment Better to use same or closer NTP servers when distributed?
@slugchewer By the way, you're not from the OPERA Collaboration are you? ;-)
Sep
24
comment Better to use same or closer NTP servers when distributed?
Thanks syneticon-dj :) @slugchewer - The peer entries will be at a lower stratum than the server entries, so they will only come into play when the servers are unreachable or marked as bad. I generally use that model in HA clusters where internal consistency of the cluster is very much more important than correctness of time. However, you will still have hiccups when the external correct time source is re-established. Better in general to aim for correctness through redundant time sources.
Sep
23
comment Switch eliminated collisions. But what about
Also, even cut-through switches (which try to avoid buffering latency) are smart enough not to try and send two frames at once.
Sep
23
answered Better to use same or closer NTP servers when distributed?
Sep
23
comment join ZFS/Solaris to windows AD 2003/2008 domain
@MarkM Absolutely. IMHO permission issues have not been eliminated, and are still the most likely cause - thus my request for clarification from user95587. I'm not sure why that should be controversial..
Sep
23
comment join ZFS/Solaris to windows AD 2003/2008 domain
@user84104 The Solaris CIFS Service Troubleshooting Guide suggests otherwise. I'll defer to you if you know another way, but it's still worth confirming whether user95587 knows about this.