FreeBSD + CUPS + Epson NX130 (SX130)


Hello there!

I decided to buy a printer. Actually my choice was Epson Stylus S22, but the salesman said all ones had been sold and recommended me just the same model but with scanner (Epson NX130). The model has the same cartridge type and printing head.
So, I bought Epson NX130 and CISS system for it as well. Also I asked to fill CISS with a pigment inks.
As you may know, pigment inks dry faster then dye-based inks and you need print at least every other day in full color.
Let’s start.
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RAID

(rād) Short for Redundant Array of Independent (or Inexpensive) Disks, a category of disk drives that employ two or more drives in combination for fault tolerance and performance. RAID disk drives are used frequently on servers but aren’t generally necessary for personal computers.There are number of different RAID levels:

  • Level 0 — Striped Disk Array without Fault Tolerance: Provides data striping (spreading out blocks of each file across multiple disk drives) but no redundancy. This improves performance but does not deliver fault tolerance. If one drive fails then all data in the array is lost.
  • Level 1 — Mirroring and Duplexing: Provides disk mirroring. Level 1 provides twice the read transaction rate of single disks and the same write transaction rate as single disks.
  • Level 2 — Error-Correcting Coding: Not a typical implementation and rarely used, Level 2 stripes data at the bit level rather than the block level.
  • Level 3 — Bit-Interleaved Parity: Provides byte-level striping with a dedicated parity disk. Level 3, which cannot service simultaneous multiple requests, also is rarely used.
  • Level 4 — Dedicated Parity Drive: A commonly used implementation of RAID, Level 4 provides block-level striping (like Level 0) with a parity disk. If a data disk fails, the parity data is used to create a replacement disk. A disadvantage to Level 4 is that the parity disk can create write bottlenecks.
  • Level 5 — Block Interleaved Distributed Parity: Provides data striping at the byte level and also stripe error correction information. This results in excellent performance and good fault tolerance. Level 5 is one of the most popular implementations of RAID.
  • Level 6 — Independent Data Disks with Double Parity: Provides block-level striping with parity data distributed across all disks.
  • Level 0+1 √ A Mirror of Stripes: Not one of the original RAID levels, two RAID 0 stripes are created, and a RAID 1 mirror is created over them. Used for both replicating and sharing data among disks.
  • Level 10 √ A Stripe of Mirrors: Not one of the original RAID levels, multiple RAID 1 mirrors are created, and a RAID 0 stripe is created over these.
  • Level 7: A trademark of Storage Computer Corporation that adds caching to Levels 3 or 4.
  • RAID S: EMC Corporation’s proprietary striped parity RAID system used in its Symmetrix storage systems.
  • ORIGINAL http://www.webopedia.com/TERM/R/RAID.html

    Dlink Swithces

    Как на свичах D-Link по snmp вытянуть mac адреса в определённом vlan?

    Ответ:

    snmpwalk -v1 -c community ip mib-2.17.7.1.2.2.1.3.[vlan-id]

    # Причем маки отдаёт в десятичном виде 🙁