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Drive Options: 1TB SATA 2TB SATA 3 TB NL-SAS: 7 x 400 Gb SSD & 41 x 2 TB NL-SAS: 600 GB-SAS 900 GB SAS Drive Speed: 7200 RPM: SSD & 7200 RPM SAS: 10K RPM RAW Capacity: 48 TB(1TB Drives) 96 TB(2TB Drives) 144 TB(3TB Drives) 84.8 TB: 28.9 TB (600GB Drives 43.2 TB (900GB Drives)
In computing, Serial Attached SCSI (SAS) is a point-to-point serial protocol that moves data to and from computer-storage devices such as hard disk drives, solid-state drives and tape drives. SAS replaces the older Parallel SCSI (Parallel Small Computer System Interface, usually pronounced "scuzzy" [ 3 ] [ 4 ] ) bus technology that first ...
Western Digital WD740GD A Fujitsu laptop drive (80 GB, 7,200 RPM) on the left and a Western Digital VelociRaptor (300 GB, 10,000 RPM). The Western Digital Raptor (often marketed as WD Raptor, 2.5" models known as VelociRaptor) is a discontinued series of high performance hard disk drives produced by Western Digital first marketed in 2003.
Input/output operations per second (IOPS, pronounced eye-ops) is an input/output performance measurement used to characterize computer storage devices like hard disk drives (HDD), solid state drives (SSD), and storage area networks (SAN).
32/64/128 GB: Three common sizes of USB flash drives; 1 TB: The size of a $30 hard disk (as of early 2024) 6 TB: The size of a $100 hard disk (as of early 2022) 16 TB: The size of a small/cheap $130 (as of early 2024) enterprise SAS hard disk drive; 24 TB: The size of $440 (as of early 2024) "video" hard disk drive
While hardware RAID controllers have been available for a long time, they initially required expensive Parallel SCSI hard drives and aimed at the server and high-end computing market. SCSI technology advantages include allowing up to 15 devices on one bus, independent data transfers, hot-swapping , much higher MTBF .
On SCSI hard disk drives, the SCSI controller can directly control spin up and spin down of the drives. Some Parallel ATA (PATA) and Serial ATA (SATA) hard disk drives support power-up in standby (PUIS): each drive does not spin up until the controller or system BIOS issues a specific command to do so. This allows the system to be set up to ...
Similarly, a "300 GB" hard drive can be expected to offer only slightly more than 300 × 10 9 = 300 000 000 000, bytes, not 300 × 2 30 (which would be about 322 × 10 9 bytes or "322 GB"). The first terabyte (SI prefix, 1 000 000 000 000 bytes) hard disk drive was introduced in 2007. [31]