HDD warranty checks
I was looking around for warranty checking pages. I found these for my HDD: Western Digital Toshiba Seagate and Maxtor
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ZFS tuning
Wyze uses this tuning on his 2GB NAS box. # Dynamically adjust write limit based on previous txg commits to attempt # to maintain a 2-second commit time vfs.zfs.txg.synctime_ms=”2000″ # Set a minimum write limit of 50MB which is slightly more than the default vfs.zfs.write_limit_min=”50M” # Default vfs.zfs.write_limit_shift appears to be “3” which on a system # with 2GB RAM such as this one results in a write_limit_max of 256MB, which # is
The hardware is ready. What tests to run?
I think I’m now at the point where I have all the hardware assembled and it’s ready for testing. Now I’m trying to determine what set of fio tests to run. If you know of a set of standard tests, or just have some of your own, please let me know in the comments. The hardware The disks I have assembled are all available via the LSI 9211-8i. The basic hardware specs are:
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Testing the benchmark scripts – 1
I’m getting very slow throughput on these drives during my first set of tests. I have no idea why… The drive in question is: $ grep ada2 /var/run/dmesg.boot ada2 at ahcich4 bus 0 scbus5 target 0 lun 0 ada2: <ST2000DM001-1CH164 CC24> ATA-8 SATA 3.x device ada2: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes) ada2: Command Queueing enabled ada2: 1907729MB (3907029168 512 byte sectors: 16H 63S/T 16383C) ada2: Previously was known as ad12 Here
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New benchmarks coming
I think y’all should consider the benchmarks to date as prototypes. Tonight I wrote some scripts which will make my tasks easier and faster. It’s great not to have to manually enter all the commands. It also makes for consistencies between each run. We’ll concentrate on just two tests: bonnie++ and fio. These tests will be performed on both ufs and zfs. I’ll also run the tests on the drive when attached to
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Benchmarking the TOSHIBA DT01ACA300 – ZFS
This is a repeat of a benchmark I did yesterday. The drive is a TOSHIBA DT01ACA300 3TB HDD. This is a 7200 RPM SATA III drive. Tests were run with FreeBSD 9.1 in the hardware listed below. Tonight, we’re going to do the partitions slightly differently, and try ZFS. The hardware We are testing on the following hardware: motherboard – SUPERMICRO MBD-H8SGL-O ATX Server Motherboard (Supermicro link): $224.99 CPU – AMD Opteron 6128
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Do you have a Seagate ST2000DM001?
Do you have Seagate ST2000DM001? This 2TB drives seems OK at straight dd output, but seems absolutely terrible at random output. If you have one, and do not mind this destructive test (IT WILL DESTROY ANY DATA ON THAT DRIVE), please let me know the results. The reason I ask is the very slow results we’re getting from a tool designed to test the throughput of an HDD based on writing data at
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How I upgrade my WordPress installations
I have three blogs run on WordPress. Each runs on its own installation of WordPress. Why? Because all the single-install solutions I’ve seen were not very attractive. Convince me otherwise. Following the official instructions, I drew up this set of instructions which work for me. Hopefully, they work for you too. But I’m sure it’d going to be cryptic at first. My WordPress is installed in the directory wordpress.installed. The webserver looks for
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zfsroot guides – which one to use?
I started looking around for guides for creating a zfsroot. Here is what I’ve glanced at so far, along with some of my comments. I plan to create an 8 drive array, running raidz2. FreeBSD wiki page – seems OK ZFS-only booting by Ollivier Robert – based on 8.0, but I need to read it through again OPTIMIZED FOR 4K-SECTOR DRIVES – interesting, but not set up the way I want my system
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Benchmarking the Seagate ST2000DM001 – slower hardware
In the previous benchmark of the Seagate ST2000DM001 2TB HDD, I used a AMD Opteron 6128 Magny-Cours 2.0GHz (see the URL for complete details of the system). Today, I’m using a different system. The hardware We are testing on the following hardware: motherboard – SUPERMICRO MBD-X9SCL+-F Micro ATX Server Motherboard LGA 1155 Intel C202 DDR3 1333 (manufacturer page) – $179.99 CPU – Intel Xeon E3-1230 V2 Ivy Bridge 3.3GHz (3.7GHz Turbo) 4 x
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