Many of us use a Keyspan Serial adapter to manage devices with serial ports on them. Those who find you need to console into devices but hate the fact that you have to either use Zterm (which is no longer maintained) or boot a Windows Virtual Machine will find an application called goSerial pretty handy. GoSerial makes a Keyspan serial to usb adaptor, connected with a null modem cable, useful. You will be in CLI heaven in moments. goSerial can be downloaded here. You can also use the screen command. The screen command will open a virtual terminal and provide the functionality of an old DEC VT100 terminal. Screen is…
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Keyspan Serial Adapter
When you’re doing Xsan deployments you often run into situations where a serial adapter comes in handy. It might be the serial port on an Xserve, a Promise Vtrak, an Xserve RAID, a managed switch, a Fibre Channel switch or a UPS but it seems like it’s just a super useful little thing to have. Now, since the MacBook and MacBook pro do not have serial ports that leaves you hanging a little. So, this little guy comes in pretty handy: http://www.keyspan.com/products/usa19hs/
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Xsan: Promise RAID Command Line Arguments
about View utility information. array View or edit array information. Create, edit or delete a new or existing array. Create, edit or delete logical drives in an existing array. To physically locate an array in an enclosure. Accept an incomplete array condition. battery View battery information or to recondition a battery. bga View status of all current background activities. Enable or disable relevant background activities. Modify the background task rate for each of the background tasks. buzz View buzzer status, enable/disable and turn on/off buzzer. chap View, create, edit or delete a CHAP…
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LUNscaping
In Xsan you need to plan your LUNs carefully. I’ve decided to call this process LUNscaping. Join me with this and feel free to take credit for the term… 😉
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The Anatomy of a RAID
Originally posted at http://www.318.com/TechJournal The acronym for RAID can often be misleading as it has had multiple meanings over the years. RAID originally stood for a redundant array of inexpensive disks. The acronym RAID is now also known as a redundant array of independent disks as not all RAID disks are inexpensive. RAID refers to a hard drive storage mechanism using multiple hard drives to share or replicate data among the drives. In some cases this can mean having data that is written to a single logical drive stored on multiple drives so there is redundancy of the data or RAID can be used to maximize throughput to drives by…