Hard Drives
Buy SAN and storage array hard drives by array family and OEM part number rather than by capacity alone: Dell, for example, documents its SC5020 as shipping with and supporting Dell Enterprise Plus drives, which is why array drives are matched by array family and by the number of the drive they replace. Open the Dell EqualLogic, Dell Compellent, Dell PowerVault, NetApp or HPE Nimble drive page, then match capacity, speed and form factor; array drives come as 10K and 15K SAS and 7.2K nearline SAS in 2.5- and 3.5-inch sizes. SAS vs SATA explains the interface difference.
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Dell EqualLogic NJYM3-EQL 146GB 15K SAS 2.5" 6Gbps Hard Drive | ST9146852SSAvailability: Available by QuoteManufacturer: Dell Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock - Dell NT1X2 4TB 7.2K NL SAS 3.5" 12Gbps ISE Hard Drive | HGST HUS726T4TALS200Availability: Available by QuoteManufacturer: Dell Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
- Dell NWH7V 300GB 15K SAS 2.5" 6Gbps Hard Drive | Toshiba MK3001GRRBAvailability: Available by QuoteManufacturer: Dell Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
- Dell Compellent P3HC0-CML 1TB 7.2K NL SAS 3.5" 6Gbps Hard Drive | ST1000NM0023Availability: Available by QuoteManufacturer: Dell Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
- Dell EqualLogic P3HC0-EQL 1TB 7.2K NL SAS 3.5" 6Gbps Hard Drive | ST1000NM0023Availability: Available by QuoteManufacturer: Dell Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
- Dell PDFHC 8TB 7.2K NL SAS 3.5" 12Gbps SED Hard Drive | Seagate ST8000NM0135Availability: Available by QuoteManufacturer: Dell Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
- Dell R755K 2TB 7.2K NL SAS 3.5" 6Gbps Hard Drive | Seagate ST32000444SSAvailability: Available by QuoteManufacturer: Dell Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
- Dell R95FV 600GB 10K SAS 2.5" 12Gbps Hard Drive | Seagate ST600MM0088Availability: Available by QuoteManufacturer: Dell Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
- Dell RDKH0 300GB 10K SAS 2.5" 12Gbps Hard Drive | HGST HUC101830CSS204Availability: Available by QuoteManufacturer: Dell Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
- Dell EqualLogic RG5VK-EQL 450GB 15K SAS 3.5" 6Gbps Hard Drive | ST3450857SSAvailability: Available by QuoteManufacturer: Dell Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
- Dell EqualLogic RTFJN-EQL 4TB 7.2K NL SAS 3.5" 6Gbps SED Hard Drive ST4000NM0063Availability: Available by QuoteManufacturer: Dell Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
- Dell EqualLogic RVX9N-EQL 1TB 7.2K NL SAS 3.5" 6Gbps Hard Drive | MK1001TRKBAvailability: Available by QuoteManufacturer: Dell Condition: Refurbished 1 Year WarrantyRequest PricingOut of stock
Why array drives differ from server drives
A storage array accepts the drives its maker has qualified for it, and each maker documents the rule for its own family:
| Array family | What the maker requires of a replacement drive | Where it is written |
|---|---|---|
| Dell EqualLogic PS Series | Dell-provided drives only, in carriers keyed to specific array models, matching the array's drives in type, speed and spin rate | PS6210 Hardware Owner's Manual |
| Dell Compellent SC Series | Dell Enterprise Plus drives | SC5020 Owner's Manual |
| NetApp DS shelves | A drive the shelf supports, as listed in the NetApp Hardware Universe; NetApp recommends loading its Disk Qualification Package before the swap | NetApp DS224C and DS212C drive replacement procedure |
| HPE Nimble Storage | A replacement drive ordered from HPE, fitted into the array's drive carrier | HPE Nimble Storage hardware guide |
Sector size can differ as well. A NetApp knowledge base article shows a normal ONTAP drive at 520 bytes per sector and the same drive reported as failed once it is set to 512, so a drive formatted for a server is not a drop-in spare for a NetApp shelf.
Buy the drive version made for your array and match its capacity, speed and form factor to the drive it replaces. Matching SSDs are under storage array SSDs, carriers under array drive trays, and every other spare under storage array components.
SAN hard drive questions
- Can I use a regular server hard drive in a SAN array?
- Usually not, because array makers support only drives they have qualified. Dell limits PS Series arrays to Dell-provided drives and controls drive firmware only on those, NetApp requires a drive its shelf supports in the Hardware Universe, and HPE's Nimble replacement procedure calls for a drive ordered from HPE. Buy the array maker's drive version, matched on capacity, speed and form factor.
