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For capacity, backups and file storage, 7.2K RPM drives give the most terabytes for the money. For operating system and application volumes on spinning disk, 10K RPM is the usual choice. 15K RPM drives are mainly bought to replace like for like in existing arrays, since SSDs now outperform them for new builds.

Nearline SAS describes a 7.2K RPM high-capacity drive with a SAS interface. It pairs the capacity of a desktop-speed disk with SAS features such as dual ports and full-duplex links. It suits backup targets and bulk storage in servers whose controllers and backplanes are SAS.

Usually yes. A RAID controller accepts a larger replacement but uses only the capacity that matches the other members of the array until every drive is upgraded. Keep the interface, speed and sector format the same as the existing drives so the rebuild completes cleanly.

Our refurbished drives are tested before they are listed and are covered by the ServerDove warranty. As with any drive, protect data with RAID and a separate backup rather than relying on a single disk. Extended warranty can be quoted on request for larger deployments.

512e means 512-byte emulation. The drive writes 4K physical sectors but presents 512-byte logical sectors to the controller and operating system, which keeps it compatible with older software and RAID controllers. It is the most common format on current high-capacity drives.

Read the label on an existing drive for the capacity, speed, interface and vendor part number, or send us the server model or service tag. The team will confirm a match, including the caddy if you need one, before you order.