During a remote-branch deployment, a systems administrator wants to boot a lightweight hypervisor from the server's internal dual Secure Digital (IDSDM) module so that every front-bay SSD can be reserved for production data. Two identical 32 GB microSD cards will be configured in a mirrored pair. Which primary limitation of Secure Digital media must the administrator take into account before approving this design?
The SD module requires a dedicated PCIe RAID card, consuming a scarce expansion slot.
SD cards draw more than 15 W at peak, so they need a high-current PDU outlet.
SD flash has relatively low write-endurance, so frequent writes can wear the cards out quickly.
An IDSDM cannot mirror two cards; it only supports single-disk (JBOD) mode.
Secure Digital cards use low-cost flash that is rated for far fewer program/erase cycles than enterprise-class SSDs. When a hypervisor writes log, scratch, or OS-update data to the boot device, the repeated writes can quickly exhaust the card's limited endurance, leading to corruption or failure-even when two cards are mirrored. Throughput, power draw, hot-swap support, and RAID levels are secondary considerations; the write-cycle lifespan is the factor that most often disqualifies SD cards for anything beyond light, mostly read-only boot duties.
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What does 'write endurance' mean in the context of SD cards?
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What is the purpose of mirroring two SD cards in an IDSDM module?
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Why are SD cards primarily suited for light, read-only boot purposes rather than heavy write operations?