eBabble

RAID Cluster Size

Posted by in Technology

Blast from the past: originally published in 2003.

Testing RAID cards is a long and arduous process. The most difficult part was deciding on a standard cluster size for all cards. While the Promise cards can have from 8k to 2048k, Adaptec’s limit is 128k, and 3ware’s is 64k. All cards default to 64k cluster size, so who am I to argue? Just for comparison sake, I ran the Promise FastTrak100 with three cluster sizes to see the difference.

RAID Cache Size

Posted by in Technology

Blast from the past: originally published in 2003.

Cache plays an integral part in RAID types that use parity or error checking and correcting (ECC). How much cache to put on a RAID card to get the best performance is a tricky bit of business: the natural reaction is to max it out. Below is a comparison of benchmarks using three sizes: 64, 128 and 256 MB PC133 SDRAM on a Promise FastTrak SX4000 with IBM DeskStar 75GXP 20 GB drives.

RAIDCore BC4852

Posted by in Technology

The BC4000 RAID HBA family, comprised of 64-bit, PCI-X low-profile compliant controller cards, are the only 2U compatible SATA RAID controller cards available today. The product family provides both four-drive (BCM4452-H) or eight-drive (BCM4852-H) support and are based on Broadcom’s new BCM5770 Serial ATA controller chip. The new Broadcom BCM5770 SATA chip and the BC4000 controller card significantly boost reliability with efficient power consumption and thermal load balancing, and feature a MTBF (mean time between failures) of 3.5 million hours, which is nearly three times greater than that of competitive…read more

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Promise S150 SX4

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FastTrak S150 SX4 Four-port Serial ATA RAID controller with 1.5Gbps per channel 32-Bit/66MHz PCI 2.2 interface Support for RAID level 0, 1, 10, 5 and JBOD Online array expansion and RAID level migration to add capacity on the fly Supports hot swap of failed drives Automatic/manual rebuild of hot spare drive PerfectRAID technology for robust error handling and recovery of fatal, media and disk errors Variable stripe block size support enables optimization for diverse application requirements Supports up to 256MB of SDRAM memory Seamless upgrade to Promise’s external storage solutions…read more

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Promise SX4000

Posted by in Technology

I’ve been a big Promise fan since the original FastTrak (later renamed FastTrak33 to fit with the product line). At the time I had a bunch of 2 GB Western Digital hard drives that I didn’t know what to do with. The idea of using a RAID controller to make one big 8 GB ( wow, that’s big ) drive was fantastic. Of course there were some growing pains, but the card worked great. What’s even better is that I just requested a new BIOS chip for the card and…read more

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2007/04/30: Backup

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It’s been a few weeks since my last eWeakly, simply for the fact that I haven’t done anything computer related of interest. Last week Microsoft released the Windows Home Server Community Technology Preview (CTP).  This put a lot more fit and finish to the product.  I used the upgrade option to upgrade my existing WHS beta 2 installation.  Things went well, but I was still getting a failing service and couldn’t install the client software.  I had hoped the upgrade would resolve these two issues. Around the same time I…read more

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2007/04/09: Tyan

Posted by in Technology

The great server upgrade took place this weekend, or to be more accurate is still taking place.  I had a lot of spare parts at home and had already built the server.  As I started to remove files from the existing server one of the three Samsung 160 GB SATA drives failed and my RAID 5 array started limping in degraded mode. But that’s alright, as I had a spare server already set up.  A Tyan 2882-D motherboard, two Opteron 246 CPUs, four 1 GB PC2100 DDR ECC RAM, 3ware Escalade…read more

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2007/03/26: WHS Redux

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My APC UPS problems continue ( see last week for more details ) with random reboots.  I don’t believe the battery is working at all right now.  I have a brand new APC Smart UPS 1500 Rackmount in the garage, but I’ve been hoping to sell it instead of absorbing it into the household tech.  Guess it will be pressed into service. I posted a review of the Promise SATA300 TX4 but needed a high quality pic.  There’s a tiny picture on the Promise website but when you click “Enlarge…read more

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Promise FastTrak

Posted by in Technology

When one thinks of ATA RAID, the first name that comes to mind is Promise. The first company to mass market a controller for IDE drives continues the FastTrak line from the original to the 66 and 100 models, each accommodating a new generation of ATA specs. Looking at the features offered, very little has changed between the three models other than the ATA spec supported. All three FastTrak’s support four disks in the following configurations: RAID 0, RAID 1 and RAID 0+1. The FastTrak100 supports JBOD ( just a…read more

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