697389-001 900GB 10000RPM SAS 6Gb/s Hot-Swappable 2.5-inch Hard Drive for 3PAR StoreServ 7200 Storage by HP (Refurbished)
697389-001 SAS Nearline 2.5-inch Hard Drive
702505-001 900GB 10000RPM 2.5inch Small Form Factor SAS-6Gbps Hot-Swap 3PAR Hard Drive for 3PAR StoreServ 7000 Series and M6710 Enclosures
Device Type: Hard Drive - Hot-Swap
Form Factor: 2.5 inch SFF
Interface: 697389-001 SAS 6Gbps (Serial Attached SCSI)
Drive Technology (Fill): Air
Drive Transfer Rate: 600 MBps (external)
Spindle Speed: 10000 rpm
HPE 3PAR StoreServ 7000 Series: 7200 7200c 7400 7400c 7440 7440c
697389-001 nearline hard drive is being used to refer to high-capacity Serial ATA drives that work with Serial Attached SCSI storage devices. Presumably this usage is by analogy to the high-capacity and low-access speed tape systems.
Nearline storage is the on-site storage of data on removable media. The removable storage concept dates back to the mainframe computer and remains a popular option for individuals, small businesses and large enterprises. The term nearline is a combination of the words near and online
Several hundred or more nearline SAS drives grouped together is known as a massive array of idle disks (MAID). This configuration offers the potential to reduce the cost per terabyte of storage to a level on par with magnetic tape.
Near-line storage is primarily used in enterprise-class data centers, data warehouses and IT environments. It is most often used to store data permanently and provide on-demand access to stored data, usually over a network/Internet connection. It cannot be immediately provisioned but doesn’t require any manual help as is required in removable or offline storage.
Hot plugging (also called hot swapping) is the ability to add and remove devices to a computer system while the computer is running and have the operating system automatically recognize the change. This is useful when a system component fails as it enables a new device to be installed without system downtime.
Hot swapping is the term given to the process of replacing a key component of a computer system while it’s still running. Essentially you change a specific part without having to switch it or the whole system off. This enables a business to continue utilising the system without experiencing any kind of downtime.
This may sound like a relatively strange process given that we are all told to power down devices before making changes; but it is highly effective when changing the components a build. 697389-001 Hot Swap Hard Drive.